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Ok, about 10 days ago I purchased enough granular Stabilizer (CYA) from Walmart to raise my level from 20 to 40. I added the stabilizer to the skimmer with the pump on recirculate. I let the circulation go for about a week and rechecked my CYA level, but now I am showing near 0 on my reading...

Ok, great. I haven't found a good thread explaining the best way to add CYA to achieve the desired level. How should I go about doing this? There is a hardware store that does care the Stabilizer (I believe in granular form??). Should I be able to trust PoolMath on the quantity of stabilizer to...

Thank you, jblizzle, for clarification on the pH and TA relationship to algae. After a few days worth of adding the recommended doses of chemicals per PoolMath, here are my results: FC: 3 (Overnight loss of 1ppm) pH: 7.5 TA: 110 (somehow got a little high... not sure how?) CH: 150 CYA: 20 This...

Actually, thank you for mentioning that. I forgot to change it on my signature. It appears to actually be about a 20,000 gallon pool. 30,000 was my estimation when I first took on the job (its my boss's pool). I have been adding chemicals according to the correct volume, just forgot to update...

I decided to go do as danacc suggested in refilling, retesting, and balancing the water. These are my test results as of this morning: FC: 7.5 (Goal: 10 - shock level per CYA level) pH: 6.8 (Goal: 7.7) TA: 40 (Goal: 100) CH: 150 (Goal: 250) CYA: 20 (Goal: 40) Things are looking UP!!! Water is...

Thanks for the help! I just drained about 75% of the pool, and am ready to vacuum the remaining visible 'gray' particle algae still settled on the floor of the pool before refilling and balancing my chemistry levels. I have ready several of the 'losing prime while vacuuming' threads on the...

Hi everyone, I am completely new both to pool maintenance and the forum. I have undertaken the responsibility to recover and maintain my boss's 30,000 gallon vinyl above ground pool, and I need help with some pool chemistry. I came to the pool 3 weeks ago, and it was a dark green lake. It had...