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Re: Substrates

Bailin writes:

<snip>> Otherwise, what other forms of substrate would be good for the 
planted tank 
>  aside from fluorite, profile, or laterite which can get pretty costly.  
>  (Poor graduate student.)  Any ideas would be appreciated.

Folks are having luck with a number of pottery clays, pyrophilittic clay, and 
even cheapo kitty litter, which it turns out analyzes out pretty close to the 
venerated laterite.

Bob Dixon