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Re: Oil dry = Kitty litter?

Bob Olesen wrote:

> I know nothing of the silicate issue - sorry.

Silicate really shouldn't be an issue.  All clay minerals are
silicates.  Sand and gravel is mostly silicate.  Besides, dissolved
silica is a common component in fresh water.  I don't expect it would be
limiting to diatom growth unless you have very fresh water (as in the US
northwest), or you use RO, DI or distilled water in your tank.

Roger Miller