Sealing with acrylic spray

Glenstorm

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Dec 1, 2002
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Orono, ME
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Anybody have experience using acrylic spray in their tanks? I have made some rock out of concrete, perlite, peat, and sand. It is for a cichlid tank so I thought the concrete wouldn't be an issue. However the pH is rising a bit more than I want. It is around 8.4-8.6. Anyhow I was thinking of spraying it with acrylic spray and wondering if that would be toxic for fish. Any thoughts/insight would be appreciated.
 
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