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Re: Substrate by ADA
CHristopher Coleman writes:
> The ADA substrate is 2 part: The bottom layer is a pumice stone
> mixed in with peat called "PowerSand" whose purpose is to regulate
> to some extent the pH. The top layer is a baked clay called "AquaSoil"
> with neutral effect on pH. Both substrances are quite porous, which
> provide for good bacterial growth.
I know that pumice and peat can be mixed for a whole lot less money than ADA
is getting, and calcined clay is probably cheaper, too. Think about it folks.