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Trickling Filters: Filter Fly control Rate Topic Display Mode Topic Options Author Message Poquonock Carl Posted 4/27/2006 10:54:33 AM Forum Newbie Group: Forum Members Last Login: 10/30/2006 9:05:49 AM Posts: 7, Visits: 16 We have two Trickling filters which run in parallel. Chlorination is metered in GPM and dosed in PPD.  References I have seen recommend dosage at 5-10 GPM with a trickling filter chlorine residual of 1PPM for 4 hours per week.  Do you support this info.   Post #1627 Jerry Posted 4/27/2006 9:35:00 PM Supreme Being Group: Forum Members Last Login: Today @ 1:04:48 PM Posts: 480, Visits: 1,431 It might be a good place to start. However monitor it closely. You don't want to kill your algae. Post #1629 « Prev Topic | Next Topic »

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