I am having problems with getting my pool to clean up this year. I used 5 lbs. of powdered shock treatment and the chlorine level was at 3-5. I checked it this morning and I have a 0 reading of chlorine. I also use the 3" chlorine tablets in a floating device.
total hardness level is 200
ph level is 7.5
alkalinity is 60-120
cya is 30-50
I have green algae in the water. The bottom and sides of the pool are not slimmy the water is green colored and I have shocked and shocked the water with no results of getting rid of the green color. If you have any suggestions on what I can and should do please help me. I have a 27' X 4' round pool. I have a sand filter that I have been running 24/7.