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Hi guys. I just got a bottle of cuprisorb since im pretty sure its heavy metals that killed my corals. Only problem is, cuprisorb is SO fine and they go right through the filter bags that i have now. So, any suggestions? I heard people use coffee filters, but which type? Any insight would be appreciated thanks.
PS: cuprisorb is basically DI resin
PS: cuprisorb is basically DI resin


