I actualy add potasium silicate to my reef tank, to
encorage diatom algae. But no, silica sand does not
disolve well in in the aquarium, and nether does the
silica glass that holds the water in.

Wayne Sallee
Wayne's Pets



Pszemol wrote on 11/29/2005 11:28 AM:
"TheRock" wrote in message
news:7qRif.567$gi3.546@trndny09...

FYI: I used silica play sand. Works great...
Been up for 1 year.


And you do not have problems with too high silicates ?
No brown algae ? I know people using Hi-Si filters
to get rid of silica from the tap water and your usage
of silica sand must elevate silicates in the water... :-)