Hi, we just moved to El Paso and bought a house with a IG, marcite, 10,000 gallon pool with a DE filter. (Equipment is listed in my signature). We took a water sample to a local pool supply place for the stabilizer level and initial levels, and I just did all other tests today with my basic OTO kit and test strips. We have some algae and can't seem to get the FCl up to where it should be despite shocking the pool three times in the past 10 days. Here are the results:
TCl: .5-1 ppm
FCl: didn't register on Insta-test strips
Stabilizer: 195 (from initial pool supply store test)
When we first tested the pool 11 days ago, the pH was 8.2 and alkalinity was 155 per the pool store tests I added muriatic acid for the pH, but may have brought it down too low. I have borax to bring it up, but don't know how much to add. We bought the powder cal-hypo, too, but I've since been reading about basic bleach for sanitizer. Since our pool is plaster, I also don't know if the hardness is too high. Any help on what we should be doing to get the levels where they should be is appreciated.