I am so frustrated. My husband is ready to fill in the pool. This "chlorine block" has happened 3 years in a row. We always open to a dark green pool and it takes a while for us to get it clear. It is now sparkling clear but very little free chlorine level.

I have 24.000 gallon vinyl pool with a DE filter.

FREE CHLORINE 1
TOTAL AVALIABLE 4
PH 7.8
TA 70
CYA 20
CALCIUM 250

The pool store said to add dry acid, alkaline Up, and 2 bags of fresh and clear oxidizing shock.

I have already dumped so many chemicals in the pool this season ($400 plus). I am afraid to do anything else.

Last year we dumped 30 gallons of bleach in the pool to break down the combined chlorine and it bleached some of the liner.

Help!