"George Burnt" wrote in message
...
If using tap water for a reef is a sin because it might contain silicates,
why is it ok to use silica based sand? Or I am I compaing apples to
oranges
here.


Using silica sand is ok but using tap water full of silica is not too good
unless enjoy pruning algae. Silica sand will eventually leak out silica but
VERY small amount. It the quantity that matter.

CapFusion,...