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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.

Bob Dixon