Randy Holmes-Farley
Reef Chemist
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My Tank Thread
The polymer that increases viscosity in splashless bleach (sodium polyacrylate) will tend to bind to aragonite. I’m not sure what Reef tank impact it would have once bound, but it might have one.
.. I would get new sand - and btw - neither me - nor anyone else here can say with any certainty the right answer. The more you rinse - the less likely the problem - but for 100$ - I would replace it.

