Comment by Peter on November 4, 2012 at 4:38pm

Arts and craft store sells clay. or non clumping kitty litter or flourite are also clay. Also the thing at car shops that they use for oil spill. Called I thing ultra sorb. Or oil sorb. It's clay.

Comment by Lucien on November 4, 2012 at 5:19pm

Dustin sells clay.

http://www.aquaticjungles.com/aquarium-plants/clay-for-any-planted-...

Comment by seth roach on November 5, 2012 at 7:25pm

....pretty much any clay you find will have a pretty good amount of iron in it unless you happen to come across true pure porcelain which i am quite sure you will not come across by mistake...any clay that is red or grey should be fine just dont get anything that is like super dark like almost black it would probably contain a lot of manganese which im not 100% sure is bad for fish but its pretty toxic for humans so its probably not good....

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