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Pumice in tanks


polgara

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Good question. I haven't thought about doing it but is does make me you think if there is a chemical risk.

Years ago I used to be right into collecting and studying rock and minerals. I was a member in a club blah blah blah, anyway. Something that came up more then once in club meetings and rock and mineral sales was some rocks and minerals can release chemicles into the water. And some of them can be very nasty.

Be careful what stones you put into the tank if you are unsure.

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Pumice itself is okay, there are people that use it in their filters because of the high suface area, the problem with using large pieces is that when it forms it collects other rocks etc that might not be safe. There are a couple of simple tests people do to test rocks, the first is to put vinager on it to see if it bubbles (which isn't much use to you), the second is to test some water (for PH, Kh, etc) then put the rock in for a couple of weeks and then test the water again.

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yeah that might work :P

But pumice could have sufuric acid in it then again if it's been drifting around for some time it could be all gone. You could try keeping it in water over a some time then test the pH of the water.

I think it would look rather nice in the bottom of a tank. If you can get it to stay there. Good luck making it sink.

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