The only way to lower CYA is to do a partial refill so she is correct in that. However, you will need to replace close to half your water but without dimensions, I can't tell if that would be 4' or not.
BTW, a partial refill will also lower your CA.
Re: New SWG, High CYA???
The only way to lower CYA is to do a partial refill so she is correct in that. However, you will need to replace close to half your water but without dimensions, I can't tell if that would be 4' or not.
BTW, a partial refill will also lower your CA.
Mark
Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
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