anyone ever used a diatom filter?

[BlueAbyss]

Originally Posted by Aquattro

...I thought I heard diatomaceous earth could no longer be bought. Health reasons.

Diatomaceous earth is pretty nasty stuff if you breath it in, for sure (wear a dust mask when working with it, and eye protection would be good)... but I hope this isn't true, it is one of the more useful products out there for killing garden insects without chemicals.

Oh, and for filtering aquariums on occasion... yes, I believe that's what we were talking about So is it not available from the company that makes the filters than?