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Hi everyone. I have a 40,000 gallon gunite IG pool, no spa, with a non de cartrige filter. Neglected testing for couple weeks just put in chlorine tabs. Now cya is 100. FAC AND TAC both at 6. TA =100, PH=7.5, Calcium hardness=260, Phosphates=300, total dissolved solids=1700. I have begun to...

Hi every one. Have owned my current 40,000 gallon in-ground plaster pool for over thirty five years. Pool is surrounded by cement. About four weeks ago pool began getting green and clouding. Initially pool store (via testing pool water) reported that I had too much phosphates Ok so I added...