is this blue?

mknauss

Mod Squad
May 3, 2014
12,219
Laughlin, NV
#21
Yes. I would skip the salt and use liquid chlorine until your water warms up. The SWCG does not produce chlorine when water temp is below 55F or so.

Do you have a proper salinity test kit? If not, only use enough salt to get to 2800 ppm or so. Then see if the SWCG is happy. If not, add more salt. But again, I would wait until the water warms.

Have muriatic acid on hand as you will want to work your TA down by lowering the pH to 7.2 or so when it hits 7.8. It will rise pretty rapidly until your TA drops.
 

Oceansol

Well-known member
May 26, 2015
45
Oceanside, California
#27
Yes. I would skip the salt and use liquid chlorine until your water warms up. The SWCG does not produce chlorine when water temp is below 55F or so.

Do you have a proper salinity test kit? If not, only use enough salt to get to 2800 ppm or so. Then see if the SWCG is happy. If not, add more salt. But again, I would wait until the water warms.

Have muriatic acid on hand as you will want to work your TA down by lowering the pH to 7.2 or so when it hits 7.8. It will rise pretty rapidly until your TA drops.
I don't think my water temp ever gets below 60ºF, so I think I'll go with salt.

Thank you again!
 

Oceansol

Well-known member
May 26, 2015
45
Oceanside, California
#29
Thank you! I retested today and got these results:

pH 8.2
FC 3.5
CH (42 drops) 1025 :shock:
TA 110
CYA 25
CSI .88

I will be draining tomorrow. Pool math says about 60% should be replaced.

On Thursday it POURED rain. We got almost 4 inches in 2.5 hours. I had to drain some of the pool to keep it from overflowing. I wasn't sure how the storm (and draining 4-6 inches) would affect the test results.
thanks to all who replied!