I used my new Taylor K-2006 test kit. My setup is a 15k gal SWG gunite pool with spa overflow. Results are as followed:
1) Should I bump the CYA up to 70? Is so, I will need to bump my FC up to around 3 to follow the recommended Chlorine/CYA chart, right?
2) Is 7.4 a good number to try and get my pH down to, or is that too low? My pool guy told me that I will always have my pH rising bc I have a SWG pool. He instructed me to pour the Muriatic Acid around the perimeter of my pool and said I can leave my pump on while doing this...is this correct? Also, what do I use to put the Muriatic Acid in, like a plastic measuring cup? Just wondering about it eating through whatever I put it in.
3) What is my best option when purchasing these chemicals for the best price to save money? It appears that buying concentrated bleach (8.25%), solid Muriatic Acid, and Cyanuric Acid would be my cheapest and best bet, right? Or should I just throw some Dichlor/Trichlor pucks in the skimmer since I need to do exactly what they will do to the water that is...increase FC, increase CYA, and decrease pH, right?
4) Just want to make sure I have this right. Anytime I'm adding powder directly to the pool, I need to backwash first, then turn the pump off and pour in the powder and let it dissolve before I turn the pump back on, right? If I'm adding liquids, I can just pour it in while leaving the pump on, right?
One last thing, I would just bump my chlorine production up on my SWG control box but it appears my cell needs to be replaced, so its only functioning at 10% right now (won't go any higher than that). Once I get the new cell it'll be easier to control my FC level I believe.