5 Things to Consider When Shopping For Underwater Lights

Underwater lighting, when done right, is safe, energy efficient, and essentially maintenance free. However, in the quest for sales, there are individuals (and even companies) out there cutting every possible corner, which not only compromises the quality and longevity of the lights, but may actually be a safety concern.

While we do everything to keep our prices as low as possible, we do not cut corners with quality or safety. We use only the highest quality UL approved components available.

Do the math and make an informed decision. All of our lights include multiple levels of safety backups. This gives our customers the peace of mind knowing that they don’t have to worry about the potential consequences of a poorly made light.

On top of that, we purchase the brightest bulbs available on the market, featuring top-quality underwater approved wire and the highest quality internal components. We are constantly working to improve our products, rather than make them cheaper.


Reading about the cut-rate lights mentioned above may lead you to believe that the more money you spend the better the light you get. Unfortunately, it’s not that simple.

There are other lights on the market that are substantially more expensive than ours. This is usually due to an expensive bulb cover of some kind. Whether a floating tube, bucket design, or sinking stub, these covers are all inherently flawed. The reason that they are on the market is because people assume that the lights are too delicate to go uncovered.

The truth is that the HID bulbs used in our systems are built with heavy duty thick glass and are incredibly durable. These are not the flimsy household light bulbs that you are familiar with.

So What’s Wrong with a Covered Bulb?

Unfortunately, any time you put any barrier between the bulb and the water, you run into problems. First, covering the bulb automatically diminishes the light output, as the light has to pass through a translucent filter. This is especially true for colored lenses.

On top of that, any object placed in the water has a tendency to accumulate marine or aquatic growth. The beauty of HID lights is that when the bulb is allowed to contact the water, it generates enough heat every night to keep barnacles and other creatures from attaching to the glass. With a covered bulb system there is an insulating barrier of air that keeps the cover too cool to inhibit growth.

We don’t want to mention any specific companies, but in an attempt to one-up each other, several of our competitors have begun exaggerating the output of their lights.

The numbers that they claim keep going up, while a little research will show you that the lumen ratings they are listing are not physically possible with the wattage used.

We have seen several systems with outrageous lumen claims side by side with our system, and believe it or not, the more “powerful”, more expensive system was much dimmer than ours.

We have an amazing 60-night risk free trial period, so if you are skeptical, or thinking about purchasing a competitors light, we invite you to order one of our systems just for comparison.

We pride ourselves on being there for our customers. Email us or give us a call and we will prove it to you.

Whether you need technical support, or just have questions, we’re here to help. If you call after hours, just leave a quick message and someone will get back to you as soon as possible. Rest easy knowing that our customer service team will take your call quickly, and happily help you resolve any problems you may run into. Click Here to Contact Us !

Please keep in mind that it is our goal to produce the most effective, versatile, and durable underwater lighting systems in the world. We believe that we have succeeded. Every aspect of our product is designed that way for a reason.

Many companies have responded to requests for a covered system (see above) by coming up with an enclosure that sits on the bottom of the water column. While it might make for a slick looking package on a website, there is a reason that we did not follow the crowd on this one.

Our floating assembly design allows for you to place the light at any depth, which makes it ideal for deeper water applications. On top of that, the fact that the bulb is suspended slightly above the sea floor means that it is able to deflect out of the way of things that may impact it.

Our competitors designs are also prone to sinking down into the sediments, which will eventually diminish the light output even further. Also, some units completely enclose the bulb which allows light only to shine up through the top. Compare this to the 360 degree light coverage of our design, and it’s clear to see why we stick to our guns instead of following trends.

About Underwater Fish Light

We have been in business for over a decade. 

The story of Underwater Fish Light is one that symbolizes the true American dream. What has now become a successful business, was born out of John Molle’s garage in 2005 when he simply wanted to make a working fish light for himself. All other fish lights on the market were above the water, causing the fishermen to cast a shadow and scare away the fish. John then came up with the idea to put the lights under the water to avoid this problem. After countless hours of testing and trials, John put the first official Underwater Fish Light in the waterway behind his house. People were drawn to the strange green glow by his dock and wanted to get one for themselves. A few months later, John’s hobby grew into a wildly successful business.

Over the years, we have continued to grow. We moved from a small warehouse, to a storefront, and now to our 5,000-square foot manufacturing facility in Port Charlotte, Florida. As a family-run business we have always prided ourselves on going above and beyond for our customers. Providing excellent customer service, as well as the highest quality lights on the market, have always been our top priorities. Every customer that purchases any light systems from Underwater Fish Light will receive a sixty-night money back guarantee as well as a three-year manufacturer warranty.


Yes! Our warehouse and showroom is located in Port Charlotte, FL, about two hours south of  Tampa, FL. 

We are open Monday through Friday 8am to 5pm. 

If you’re unable to come visit us in person, please feel free to give us a call at 941-391-5846 and one of our team members will be happy to help you with any questions!

All of our light systems are made at the Underwater Fish Light manufacturing facility in Port Charlotte, Florida, United States. We pride ourselves on providing excellent, high-quality products that are made in the USA! 

We have been in business for over a decade. We started started as a local, word-of-mouth business, and have grown into an international company. We have sold our systems from Hawaii to Qatar and have thousands of happy customers across the globe. 

Our two top priorities are product quality and customer service. We want to make sure that every customer who purchases from us gets the best fish light on the market, and couldn’t be happier with the results. 

We stand by our product. We guarantee you will see fish our your money back. We also offer a three-year warranty to ensure you will be enjoying your light for years to come. 

We are the largest fish light manufacturer in the world, and have the history and reviews to prove it!


Dock Light Systems

We have many customers that have purchased our Natural Green light many years ago and now wish to upgrade to the Vibrant Green bulb. Unfortunately, we cannot simple attached the new bulb to their system. The Natural Green lights are 175-watt bulbs. These bulbs are powered by 175-watt ballasts, or transformers, inside the control box. The Vibrant Green lights are 250-watt bulbs and are powered by 250-watt ballasts inside the control box. Unfortunately, the 175-watt Natural Green ballasts are not powerful enough to light the 250-watt bulbs.

For those customers that wish to upgrade, they would have to purchase an all new Vibrant Green system to reap the benefits of the brighter light. Underwater Fish Light does give customers a sixty-night money-back guarantee. So, any customer that is within the sixty-night period is welcome to return their Natural Green system and exchange it for the brighter Vibrant Green system.

Category: Dock Light Systems

Many people want more lights after they purchase their first. Whether it is to create a better ambiance, or to just bring in more fish, everyone seems to want more! Unfortunately, getting more lights is not as simple as just connecting a new bulb and cord to your current control box, but fret not! It is still easy to get more lights at your dock!

Each bulb on an Underwater Fish Light is connected to its own portion of underwater rated wire. It also must be powered by its own ballast, or transformer, in the control box that is mounted on the dock. If you have a single light dock system, you cannot add another light bulb to your wire. One ballast is not powerful enough to power two bulbs at full capacity.

If you do have dock system that you would like to add more lights to, you have a couple options. Underwater Fish Light gives every customer a sixty-night money-back guarantee for all systems. If you are within that sixty-day period, you are more than welcome to bring the light back to us, and we will exchange it for a larger system. If you are out of the sixty-day period, you are still able to get more lights on your dock! All you would need to do is purchase another fish light system, just make sure you have another outlet available at your dock!

Category: Dock Light Systems

Our Caribbean Blue Lights are very unique and eye-catching. They create a different ambiance than the usual green Underwater Fish Lights, and definitely stand out of the crowd. Many people are interested in these lights over the green lights, but they have several questions. They want to know if the blue will attract the same amount of fish, how the blue will work in their waterway, and if the blue is as bright as the green lights.

The biggest thing to consider before purchasing the Caribbean Blue lights is the water clarity at your dock. For these lights to show the ideal color, the water needs to be crystal clear. If the Caribbean Blue bulb is placed in murky water, it will actually illuminate an amber/yellow color. If your water is murky, there is obviously more dirt and sediment that is in the water. These actually change the color of the light, because the blue light reflects off these particles, creating more of an amber glow rather than the blue most people are expecting. That is why any possible customers must have clear water in order to enjoy the color as intended.

For more information on all of the colors we offer, click here.

Category: Dock Light Systems

Installing your Underwater Fish Light is much easier than many people think. We design our lights for easy installation, so you can see fish as soon as possible! We want you to spend most of your time enjoying the fish, not trying to puzzle out how to put it together. Below is a step-by-step installation guide for your dock light system.

  1. Mount the Control box on post/pillar at least 4 to 6 feet above the water­line and within 10 feet from an APPROVED GFI OUTLET
    1. (Do Not over tighten the screws used to mount the control box to the pillar/post).
    2. Note: Mount control box in well-ventilated area.
  2. Once you determine where you would like to place the light, attach the weight with the zip ties, to the light cord a min­imum of 3 inches from the base of the housing/bulb, and lower the weight into the water. The bulb unit will follow.
    1. BE SURE TO HANDLE WITH CARE!!!! DO NOT BANG/BUMP BULB!! Keep in mind, the bulb must always be sub­merged under water, and may never be lit out of the water.
  3. Attach the photocell to the top of the box, taking care to align the prongs
    1. The photocell attaches with a “twist-lock.” Simply align the prongs and twist the photocell on
  4. Plug the 10-foot power cord with the inline GFCI
    1. Once again, be sure your outlet is a GFCI approved outlet
  5. Wait for dark, and enjoy!
Category: Dock Light Systems

The single most frequent customer tech issue stems from nicks in the wire that leads out to the bulb. These nicks can be caused my multiple things; fish hooks, boat propellers, or marine life. Every high-end fish light comes equipped with a GFCI plug. This gives the light, and your dock, an extra layer of protection in case anything was to happen (nicks in the wire, broken bulb, power surge, etc.). If the wire leading to your bulb is nicked or cut in any way, the GFCI plug will turn the system off. This is to ensure that no electricity is leaking into the water, which obviously, can have terrible results. The GFCI also shuts off to prevent the ballast (or transformer) inside the box from overheating. If the system did not have a GFCI plug to shut it off, it would continue to run with nicks in the wire causing electricity to leak into the water and the ballast to overheat, which in turn will ruin and melt your entire system. By using Wire Shield to protect the wire, the fish hooks or marine life will scrape the Wire Shield and not injure the wire. Wire Shield is a simple product that is easily installed. Essentially, it is a heavy-duty rubber hose that has been sliced down the middle and comes equipped with zip-ties to attach it to your wire. All you need to do is wrap the shield around your wire and zip-tie it closed. This simple step will ensure your wire is protected for years to come!

Category: Dock Light Systems

This question actually has multiple answers. To answer this question, you must first decide what light series you interested in, and the amount of light you want to see by your dock. Here at Underwater Fish Light, we have three different series; Natural Green, Vibrant Green, and Caribbean Blue. Each series of light is ideal for different types of water clarity and will emit a different amount of light.

For customers interested in purchasing our Classic Natural Green lights, the ideal water clarity is in between crystal clear and mid-clarity water. The bulbs on these systems are 175-watt bulbs that illuminate a clear/white color. This white color then reflects off the particles in the water, showing a green color on the surface. These small particles attract the bait fish in the area, which in turn attract the predator fish (snook, tarpon northern pike, etc.). Because these lights illuminate white, they do not cut through murky water very well. That is why they are ideal for up to mid-clarity water. In ideal water, the Classic Natural Green series will shine a 10-foot circle on the surface of the water.

The Vibrant Green and Natural Green Extra Bright Series of light systems are designed to cut through murky water. The Vibrant Green light systems have 250-watt bulbs which illuminate green, allowing it to cut through murky water and be more successful for customers in rivers, lakes, bayous, and any other location that has dark water. Even though the lights illuminate green, they still reflect off small particles in the water to attract the baitfish and predator fish. This light system will give a 15-foot diameter circle on average in waterways.

The biggest thing to consider before purchasing the Caribbean Blue lights is the water clarity at your dock. For these lights to show the ideal color, the water needs to be crystal clear. If the Caribbean Blue bulb is placed in murky water, it will actually illuminate an amber/yellow color. If your water is murky, there is obviously more dirt and sediment that is in the water. These actually change the color of the light, because the blue light reflects off these particles, creating more of an amber glow rather than the blue most people are expecting. That is why any possible customers must have clear water in order to enjoy the color as intended.

For this question, there is no single answer. It all depends on the light you are interested in. After weighing your options, it all comes down to your personal preference. If you purchase a light that does not meet your expectations, you have 60-days to return the light and upgrade it to one you think will work better. Just give us a call at 855-FISH-LIGHT and we can answer any other questions you might have!

Category: Dock Light Systems

While a bulb can break in a matter of seconds, sadly the replacement is not as fast. All bulbs from Underwater Fish Light are sealed to the wire they are connected to. Because of this, they cannot be simply screwed in and out. In order to replace your bulb, you will need to ship your wire and broken bulb to the Underwater Fish Light manufacturing facility for repair and replacement.

Replacing the bulb is a multi-step process. First, the old housing for the bulb is cut off from the wire and thrown away. Every housing is permanently sealed to the bulb. Once the glass bulb breaks, the housing is no longer usable, so it must be thrown away. Once the old housing is removed from the wire, the wire must be inspected to ensure it is reusable. If the wire has nick, cuts, or has deteriorated, it will not be reusable. Technicians test the wire by pumping air through it while it is submerged underwater. If there are any nicks or cuts in the wire, air bubbles will rise, which will indicate an unusable portion of wire. Once the wire has been deemed reusable by the technicians, it is ready to get a new bulb!

Before a new bulb is ready to be sealed to the wire, it must first get a new housing. All housings are made by hand. They are also painted by hand with antifouling paint to repel barnacles. Once he housing are built, painted, and ready, they are put together with the bulb and connected to the wire. Now, simply because the bulb is connected to the wire, does not mean that it is sealed. The technicians then take each bulb and seal it by hand. The sealant is a “secret recipe” only Underwater Fish Light uses. This ensures that the bulbs will not leak, no matter how long the sealants are exposed to the elements. After the sealant is applied, the bulb must seal overnight. After it has been tested, it is ready to ship back to you so it can light up your waterway every night!

Category: Dock Light Systems

The HID bulbs on our dock lights are self-cleaning. They generate enough heat to clean themselves off every night. Thanks to that photocell, you don’t have to worry about turning the system on, because it will come on automatically! As long as the system is on and runs every night, the bulbs will remain clean and maintenance free!

Category: Dock Light Systems

General Questions

Within minutes, microscopic creatures called zooplankton begin to hone in on the green light source, very much the way insects are drawn to outdoor lighting. Small fish soon follow, attracted by the zooplankton. Each link in the food chain is followed by the next, over minutes and hours.

The water around the light will actually become foggy with the swirling masses of copepods, small shrimp, and other microorganisms. Large baitfish schools (species dependent on location) will actually learn the location of the light and show up night after night to feed.

This behavior is mimicked by predator fish, who soon learn that easy meals can be found in the shadows surrounding the glow. Within a few weeks, your dock will be a regular feeding station for the local fish populations.

All this unfolds right before your eyes, and from the comfort of your own home. Watch as predatory fish slash their way through schools of baitfish, or suck shrimp from the surface right in front of you.

Category: General Questions

Here at Underwater Fish Light, we stand behind our product. That is why every system sold by us, comes with a three-year manufacturer’s warranty. This warranty covers any defects that with the system. For example, if your light bulb were to burn out within three years of purchasing your system, we will replace your bulb at no charge. However, this warranty does not cover any damages to the system. So, if your bulb were to break, that would not be covered by the warranty, because it is a damage that was not caused by a defect.

If you have an Underwater Fish Light, and believe you have a part covered under warranty, all you need to do is give us a call. We will request that you send in the component to our shop, for inspection. After inspection, the technicians will determine if the part is defective, or if it is damaged. If it is defective, our technicians will replace the part free of charge and ship it back to you.

If your component is not covered under the manufacturer warranty, you are still welcome to have it repaired. We design, manufacture, and sell these lights, so we are capable of repairing or replacing any component included in these lights. For example, if your GFI plug is not working properly, and the technicians determine it is damaged from water intrusion, it will not be covered by the warranty, but you can simply buy the same part through us and we will send it back out to you.

In order to keep your three-year warranty valid, you must not make any unauthorized changes to the system. Sometimes, customers will hardwire the systems, cut off the standard GFI plug, or bypass the photocell. All of these alterations, and many more, will invalidate the warranty. We have this policy in place, because these alterations actually damage the system. Overtime, these changes cause the light to overheat and damage several components in the system. Any issues caused by these alterations are damages, not manufacturer defects, therefore, they are not covered under the warranty.

Our three-year warranty is to ensure that your light keeps running. We have thousands of customers around the world, and most of them have had their light for at least seven years. By simply protecting your system from day one, your system will last an incredibly long time.

Category: General Questions

There is no way to definitively say what type of fish you will see at your Underwater Fish Light. It all depends on where you live. Customers in Florida tend to see Snook, Tarpon, Redfish, Snapper, Largemouth Bass, and many more. Our customers up north in New York see Walleye, Northern Pike, and Smallmouth Bass. Even though we can’t tell you the type of fish you will see, we can still guarantee that you will see fish!

For some customers it takes less than an hour for them to see fish. For others, it could take up to a month. For this reason, every customer automatically gets a sixty-night money-back guarantee. This gives every customer enough time with their dock to see fish without any risk.

Our lights attract fish by reflecting off tiny particles in the water like phytoplankton and zooplankton. These particles produce a food source for baitfish. Once the baitfish arrive, the predator fish (larger fish like Snook, Tarpon, or Northern Pike) are attracted to your dock. You will eventually see an entire food chain right outside your home! Our lights come equipped with a photocell that automatically turns the light on at dusk and off at dawn. This not only ensures the system cleans itself, but it also builds a feeding cycle for the fish. Because of this, the fish know they can find food at the light each night.

The longer the light is in the water, the more fish you will see. The type of fish at the lights will vary depending on the time of year. Some fish are more active in colder months, whereas others thrive in colder weather. So, when you buy an Underwater Fish Light, you can rest assured that you will see fish, but your location determines the type of fish you will see.

Category: General Questions

Here at Underwater Fish Light, we can guarantee that you will see fish, but being able to catch them is up to you! With just a few simple techniques, you can become a night fishing pro and reel them in all year long! All you need is a good lure or bait, proper casting technique, and some patience.

The main reason these lights work so well is the feeding cycle they produce. The fish come back night after night, because they know they are able to find food at your dock. When you first put in your fish light, you might immediately see fish. At this point, you need to use all the patience you have! Don’t start casting into the light as soon as it has been installed. Let the fish build a relationship with the light so they can become comfortable. For the first few days, you can even through out some shrimp, or any other type of food the fish might light to eat.

The last thing to do before you start casting is to get the right type of lure for your hook. The ideal lure to use in the fish light would be any kind of lure that looks like a small minnow with a moving tail. This will imitate the bait fish that normally circle the light and attract the predator fish.

Once you have everything ready, you are ready to cast! The most important thing to remember when fishing at a fish light is to NOT cast directly into the light. The best way to catch fish is to cast past the light and slowly reel the lure through the light. This will imitate the activity of the baitfish swimming in the light. Usually, you will be able to catch a fish within the first five casts, so use these tools to your advantage and get out there! Remember, we love to see any photos you have of the great fish you have seen or caught at your lights, so feel free to send them into us! Good luck fishing!

Category: General Questions

Yes! Our lights attract fish by reflecting off microorganisms in the water to attract baitfish. The more light you have in the water, the more baitfish you will see, and in turn the more predator fish you will see! 

Our Single Light Systems will still attract an amazing amount of fish, but the Double, Triple, and Quad light systems will bring in more!

For more information on different types of dock light systems, visit our dock system information page!

Category: General Questions

Portable Light Systems

The Portable 12v LED System is meant to be used TEMPORARILY. You are welcome to use the system anywhere there is water, but it must be taken our after each use. 

If you were to use the LED system at your dock and leave it in the water for an extended period of time, aquatic growth would accumulate on the light, which would eventually break the system. LEDs, in general, do not product any type of heat to inhibit aquatic growth. That is why we do not use LED lights for our dock systems. We only use HID bulbs for our dock systems. 

If you are looking for a light to keep at your dock indefinitely, your only option is to go with the HID Underwater Fish Light Dock Systems!

The first obvious benefit is being able to take the amazing brightness with you anywhere you want to go! With an inverter, you would be able to use our amazing HID systems anywhere there is water! Whether it’s on the boat, your favorite pier, or anywhere else, you will still see am amazing amount of fish! These systems use the same technology as our HID dock systems.

As a company based in Florida, we are very familiar with season residents. Many of our seasonal customs are only at their tropical waterfront home a few months out of the year. Because of this, they wanted a light that was easy to take in and out of the water quickly without much hassle. Our portable systems give those customers a simple way to install their lights when they arrive, and uninstall it when it’s time for them to return to their other homes.