Originally I was using 3 dymax robot led fixtures those things were pure junk besides the white colour they putout they only lasted 5 months or so before they started dimming out considerably. This after claiming 50 000hr life on the box.
I now use a rapid led par 30 bulb, 3 blues 2 whites which I believe is 20k. The bulb fits in a regular fixture. I'm using a 6$ walmart desk lamp.
The photo was taken during the afternoon and the tank gets a lot of sunlight too.
