I have a problem I can not fix. I have had this pool for 5 years and no problem. New SWG in Dec. It is green. I took a sample to the local pool store and they tested the water and said TA was low and sold me 4kg of sodium bicarbonate to put in over 4 days. The ph was 7. Over the past month I have shocked and added over 40 lbs. of 90% chlorine. I have added 30 lbs of sodium carbonate. I bought a Taylor K2006 test and this is the results this morning.
FC 0.2 CC .8 ph 7 TA 130, 125 using 10ml test Base demand test 22 drops = 7.8 (= 26.6 lbs of sodium carbonate for a 25000 gallon pool CYA 1.6 on the side scale or 3/8” of solution.
I am lost. Any suggestions?