Using 5m 420nm to 680nm blue and red LED getting enough "light" past 18 inches of water to allow live rock and coral growth.
How many LED's are needed?
Has anyone else done it?
Ridiculous is the price as soon as you put the word hydroponics or aquarium on a item.
Like some help building one 36"x 12" that would pentrate 18" of water at what 3000 lumens? Pars?
Buying "supplies" here in Kanada is another use of that "R" word.