Trusty_one
Aquarium Advice Regular
The violet? Ultra violet? Anything under 400nm is ultraviolet I like 400 it is also the same wavelength as moonlight I guess. Ultraviolet I don't believe to have too much to do with growth but I do like the glow it gives the tank. I think t5 aticnic are 480nm I think I am way off there Idk. I used a 470nm led on my test light I am building. I am sure there was a reason but I don't remember right now.