I am currently using an offline chlorinator with 3" tablets. I have 640# of salt and a Hayward AquaRite system with T-Cell 15 in the garage ready to go. Pool is in-ground ~25,000 gal.
The water is still fairly cool but swimmable at 72°F. So, I'm using a solar cover to bring up the temp until the Summer heat kicks in.
I'm finding the ph to remain fairly stable ~7.4. FC at 3.0.
What troubles me is it takes 4 drops to clear solution for the TA test.
Initially, my PB added a whole gallon jug of PH up, because the ph was low. FC was very low, so he added a jug of 12% chlorine.
A couple days later I tested again and the solution was bright red, and FC was also low again. So, I very conservatively added muratic acid in front of the return jets. It took a few days for my offline chlorinator to bring the FC back up 3.0
The ph is now good and hasn't moved much since, and FC is also stable, but TA is way high at 40ppm.
Solar cover is on most days and nights, weather has been rainy off and on.
Question is, does the solar cover make it difficult for TA to fall, and do I need to drop this TA before installing the SWCG? I don't want to scale this thing up.
Also, does this pool really need 16 - 40# bags of salt? The salt strip test shows little to no salt currently.