How to use Sunblaster LED's

[Dollythehun]

After the last set of "light" posts, I swore I'd never respond to another light thread again. However, I just bought two more Sunblasters and my Catts are blooming, and my tolumnias are budding, as are my twinkles.

[JN1]

but for say a 18” x 48” shelf is one 4ft strip per shelf enough for most orchids?

[Dollythehun]

I would buy two if you can afford it. Otherwise one 4' and the highest light plants directly underneath, lower light toward the sides and ends.