I have been reading a past thread from 2008 about a couple mfk members trying to tan their fish red from either the nan light to other lights. The OP asked many times if it was possible to get even slight variation of color using this light on a silver aro. His question never got answered... No one ever said no but they acted like he never asked the question. So if anyone knows a good tanning light that would work on a silver to get a little red out of it that would be awsome. I do realize in some peoples eyes this would be considered cheating or harming the fish. I will most certainly not over use the light and I live in florida where only silvers are legal so I wanted to try this.