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.