[Bodenhimer]

i bought some calcium carbonate Sand natural untreated uncolored. Is this a safe substrate for my Tanganyikan fish aquarium. I would hate to mix this with my poolfilter sand and regrete it.

ty so much

Trav

 

[JoelRHale]

The only thing you could maybe regret would be not liking how it looks later. It should be perfectly safe.

 

[d33pw4t3r]

I would check how it does in water first. I used it for my Sulcata Tortoises and seemed to remember it getting clumpy when wet. Not cheap stuff either.