Advice on CH

[firstbase]

TFP says my CH should be between 350-450. Pool Calc says 250-350. Which should I go by?

Current tests below. Already added MA for pH and will be adding some stabilizer later today. As soon as I find the bucket my wife hid in prep for hurricane..!

FAC - 6
FAC - 0-.1
CH - 370
CYA - 60
TA - 80
pH - 8.0
Borates - 50
Salt - 3200
Temp - 83
CSI - .11

 

[JoyfulNoise]

Your numbers are fine. I would try to drop the TA a little further (see if 60ppm is reasonable) and then keep the pH in the 7.6-7.8 range. That should work just fine.

FYI, my CH is pushing 1000ppm and my numbers are not much different than yours. So, even though we "Recommend" 350-450ppm, you can be well outside the CH range and still very easily balance your pool water to avoid scaling. If by "Pool Calc" you a referring to the ThePoolCalculator, we recommend you don't use that site but instead use PoolMath. TFP does not maintain ThePoolCalculator website and I don't think the owners of that site even bother to maintain it anymore. PoolMath has all of the up to date recommendations and we actively maintain the PoolMath website.

 

[firstbase]

Thanks. Lowering pH with the MA should bring TA down some correct? I did add 35 or so ozs. of stabilizer to raise CYA a little. Am using "Pool Math" but used the generic "Pool Calc" term. my bad! Sort of like calling a soft drink a "coke" in the south!