PAR38 LED Aquarium Lamp 12,000 degreeK 21W
Led race started
Bought 3 12000k's for my 37 cube reef tank they hang about 2 feet above the tank and are growing everything from soft corals to sps the shimmer effect from these is intense far more than from metal halides and are cool to the touch even after 12 hours running get these now worth every penny!!!
January 24, 2011
Does not light my tank as well as I would have thought.
I recently upgraded my 125 gallon mixed reef to LED lights from VHO flourescents to LEDs. I added two 24 inch LED fixtures which I knew were not going to be sufficient for my tank. I saw these PAR 38s and thought they would be a perfect solution to fill in the gaps. But they work more like spot lights and are very focused on a few square inches of my tank. The light is not well distributed at all. These lights work fine but I would recomend getting twice as many as you think you will need.
The only other issue is my LED fixtures are white LED's. I purchased two of the 455 nm blue bulbs and hoped they would create a nice mixture of the blue and white light. But they juse make 8 inch circles of blue light in my tank. Due to the same spot light like focus of the light there is no mixture of colors. I wish I would have gone with the 20,000k LEDs instead.
Again the lights are easy to use but the mixture of colors and the overall brightness added to my tank are not what I expected. I am planning on added a few more of the 20,000k white lights in the near future to fill in my gaps.
October 16, 2012