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Re: Aquatic Plants Digest V3 #680

At 03:48 PM 12/1/98 -0500, Scott Hudson asked:
>A potter friend was telling me about a substance called grog that is
>basically fired clay that has been ground up.....  I'm hoping it
>will be a cheaper version of Fluorite. a 50 pound bag costs $15. 

Well, I can tell you you don't need to spend anything like that much money
for calcined clay.   You can get Turface from any company that supplies
baseball park maintainers.  Or you might even get some free from your local
pro ball park.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com