Ok I am new here but I think what I have read so far is awesome. My pool has been clear for 3 days this summer. These rest of the summer I have been fighting green stuff. I have spent over $500 this summer on chemicals at pool store and nothing they say do works. I just tested the water and am going to list my readings could someone please tell me where to start.

FC 2
CC 0
PH 7.5
TA 150
CYA 32

It is a 16 x 32 inground vinyl liner pool. It is 3 ft to 8 ft. My calculations of water is about 22000 gallons. I noticed on the pool store info it is listed as 28000. Can someone verify the volume. Thanks in advance my kids will appreciate it too.