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Moved from HERE My pH is a little too high and my chlorine is low. Question is, can I add acid and chlorine at the same time or do I need to wait several hours in between?

Moved from here. If my sand filter is doing fine, is there any reason to convert to a cartridge filter? Any advantages. I would think it filters more efficiently and it’s easier to clean and easier to replace then sand but I’m not sure. Any thoughts?

My filter pressure is 12 psi. I back washed and put it back on filter and it is still 12. Isn’t that a little high? Is there anything I need to be concerned about?

Should I use Dichlor or Trichlor tabs to maintain chlorine? Also, if they both contain stabilizer and stabilizer don’t dissipate, eventually will my stabilizer become to high? thank you and appreciate any information

Just had my water tested and my CH is 150. The lady at the Pool store said I absolutely needed some calcium hardness in the pool however a couple people on this site have said it could be zero and that’s fine. Not sure who I should believe. Can I get some more opinions please?

I have a quality test kit. My CH is 0 I guess because the instruction said after I add the 20 drops of reagent it supposed to turn red. It never turned red it stayed clear. So does that mean 0 CH?

We moved about 2 months ago to a home with a pool. It is an IG, 15k gallon vinyl lined pool. We live in Alexandria, Louisiana. A couple days ago I tested the water (Sorry I don’t have the name of the kit but I believe it to be accurate...I think) and FC was 0, total alkalinity 120, pH 7.8...