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Old 03/01/2018, 09:32 PM   #11
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 87,477
I'd probably keep the GAC running, since it'll bind organics. I wonder whether the "stickiness" is from a surface film. I'd make sure there was a good rippling action on the water surface. I agree with cutting back on the organic carbon dosing.

Jonathan Bertoni
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