View Full Version : DYI LED Aquarium Lights

2014-Mar-30, 01:26 AM
I hope to build some new LED lights for large, cold, saltwater, aquariums and need help with amplification. I bought one hundred 3 watt and one 50 watt blue spectrum LED from eBay. The cavity in the lids for the old fluorescent tubes is 3' x 1' and about 3" to 4" deep. The tanks are really deep, 3 and 7.5 feet, so I am wondering if anyone has any ideas for reflectors/diffusers. I hope to create 2 or 3 rows of lights in each cavity. I am assuming that adding more lights won't create greater depth of light and that reflectors/diffusers will need to do that. One tacky idea I have is to drill mounting holes in a half-cut section of PVC pipe and cover the inside with tinfoil. I could use a larger section of black ABS pipe over that as a shroud and then stick a diffuser or just plain Plexiglas over it. I am also wondering if a Fresnel lens may work instead of a diffuser or reflectors. I may also try over-driving the LEDs with higher voltage. Thoughts?