Quote:
Originally Posted by Henry Hatch
I've got a problem with my 20 gallon excel tank which I converted from a Walstad type tank about 2 months ago.
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I am not a priest in the Walstad religion nor am I a purist in most things, but if you ". . . never used soil as a substrate . . " then you did not have a Walstad-type tank. Soil substrates are basic to the Walstad approach.
Bill