Quote:
Originally Posted by toytech
Might want to change out the sand too , could be full of crud . I reused my sand and my skimmers been pulling nasty gunk for 5 months now with no bioload.
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I'm about to do an upgrade, and I will be replacing the sand.
Still, has anybody encountered this level of inconsistency? From 0.05 to 0.5 within a couple of weeks? And then back to below 0.1 ppm?