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Re: Aquatic Plants Digest V3 #321

Frank Andermahr wrote:
> They sell a "Medium Aquarium Gravel" (snip) Also says it contains 			> silicates (if that matters,I dont know) about $10 per 100lb sack.

Hi Frank,

The silicate content matters only if the gravel is used for sand
blasting, because of silicosis danger. In a freshwater aquarium
silicates are one of the "good guys" - they have low solubility.