First post and a few questions about my pool, err frog pond.
2 weeks ago all was well, then it started turning green. Used the granular shock and tested the next day, chlorine level still at .5. Added 16 oz chlorine granules, retest, same. Repeat, same results. Bought test strips and found CYA at 140 . Spent the next week draining about 60-70% of the water out and refilled which was complete at 4:30PM today. I have ordered the TF-100XL kit but for now must use the old "Pentair Pool and Spa Test Kit" and the "AquaCheck" strips. After refill and starting the pump/filter, my CYA is 40 , TA is 180, FC is 0, pH is 8.4, can't do other tests. I used the pool calculator to determine that 217 oz of acid was required so I dumped it in at 4:30PM). I just retested (6:30PM) and it is 7.2! Is it normal for pH to react that fast?
I am following the instructions on "Turning Your Green Swamp Back into a Sparkling Oasis" so I have bought lots of bleach (CostCo has (3) 182 oz (4.26 gal) 6% Clorox for $7.45). Since pH has reached 7.2, Pool Calc says 955 oz of bleach to get to FC 15, sound right? Dump it in all at once? Retest in 1/2 hr and continue per instructions.
When I receive new test kit I will update test results. Anything I missed?