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.