how many 3w LEDs on a 40B?

[tobey]

I am in the process of setting up a 40 breeder an I'd like to run all LEDs. My question is how many of the Cree 3w LEDs would I need to grow sps an have no really shaded spots? 36x18x16 are the dimensions of the tank. Thanks for your time.

 

[butts182]

36-48

 

[tobey]

Thanks, what should the ratio be 2 royal blue to every 1 cool white?

 

[ReefLEDLights]

LED My TANK! ReefLEDLights | LED Aquarium Lighting ReefLEDLights | LED Aquarium Lighting

The link should give you a good chunk of information to help you figure things out.

 

[cungdien]

i have 24 3w 12 wh/12 bl on 24x24x18 i got alot of light

 

[cungdien]

 

[xtian]

36 LEDs will do it