DIY 72 LED build

[Snaz]

I use these same emitters in 50/50 ratio and I dim back the whites to about 80% and I like the result. If I was to change mine I would substitute some reds instead of the white.

[SeaHorse_Fanatic]

On my setup, I have 8 x 10w blues at full power and the 20 combined 10000k, 6500k & 20000k are barely on for a 15-20000k blueish look which we prefer.

For those used to metal halides, the intensity of LEDs will be a big surprise and how dim you'll have to set your lights to NOT light shock your corals will make you think the tank is dim.