Scratching my head, usually the math works great.
I added 3lbs dry CYA for my 13K gallon pool that measured 40ish CYA to try to take it to SWG recommended level of 70.
I also added salt, calcium, acid, recently. Reasons I’m our of wack: dear kids left the water hose Inside pool overnight and I found myself with a diluted infinity patio/pool in the morning...
Today tested with both taylor and pentair (this one new, arrived today) test kits and I’m around 100.
I added 3lbs dry CYA for my 13K gallon pool that measured 40ish CYA to try to take it to SWG recommended level of 70.
I also added salt, calcium, acid, recently. Reasons I’m our of wack: dear kids left the water hose Inside pool overnight and I found myself with a diluted infinity patio/pool in the morning...
Today tested with both taylor and pentair (this one new, arrived today) test kits and I’m around 100.