Re: Stains and test results..........
Marla,
I think there may be a problem with your test results. The TC (total Chlorine) should always equal FC (free CL) + CC (combined CL). According to the results the FC is 7, TC is 3 and CC is 0 which is not possible. I would double-check these because if the FC is 3 and TC is 7 you have a TON of CC in that pool that needs to be shocked out. Also, I would drain and re-fill to get the CYA below 50. Since you mention wanting to use pucks throughout the summer you might want to get the CYA down to 30.
Outside of Philadelphia, PA
18' x 40' IG - 22K gallons
Sylvan Gunite Pool (1979)
Plaster re-done (1997)
48 Sq Ft Hayward D.E. Filter (2003)
1.5 hp Hayward Super Pump (2006)
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