How big is your aquarium? I don't know much about septic systems, but I think you would need a fair amount of salt in the system before it would affect the concrete. Does your system get pumped out or does it go into a septic field? Is it a plastic septic tank or concrete? I would probably talk to a septic guru.
The bacteria definitely doesn't matter - bacteria adapt easily from salt to fresh to salt.
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~ Mindy
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Last edited by Myka; 06-21-2015 at 05:34 AM.
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