Originally Posted by
lil.guppy
http:///forum/post/2904258
I have a bad buildup of salt or possibly hard water on the glass of my light fixtures. (in my FW tank) I have tried soaking it with that hard water remover, but its not working. Its cutting down on the amount of light reaching the tank.
HELP
If its a Freshwater tank, you're probably dealing with calcium deposites from hard water; try vinigar (sp) or if its on glass, soak with the hard water deposite remover and scrap with a razor blade. Don't scrap if its plastic.