Response to I have n 18x36 fiberglass pool that is 21,000gals. according to manufacture I have to keep chlorine at less than 1.0. if it get higher then I get a brown ring at the top edge of the pool. in order to remove I have to take floater out then when chlorine level drops put in 11/2 gal of Muratic acid to clear pool. will the Haywood CL110 put in low levels of chlorine to solve my issues ?

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