by beaslbob » June 1st, 2011, 5:13 pm
Probably someone already mentioned this but I once used plastic window tint from an auto store. Just applied it to the glass top and got a nice dark (dim?) blue light in the tank. In a week corraline had taken off and spread really will covering most of the top rocks.
Seems like you could to the same on the tank but perhaps it would not be a permanent as you would like.
my .02
since 79 ~12 fw leidens , ~8 years FO salt, mixed reef, Currently-10g FW leiden (30 fish) since 2002, 55g display mixed reef since 2003, 20g Fw leiden from oct 2006. 29g mixed reef since 2005. Very strong emphasis on the tank maintaining itself. tap water, no water changes.