I have been trying to clear my pool since and April and have spent a small fortune without any luck. My pool has gone from dark green to a medium green with cloudiness but no matter what I do, I can't clear out all the algae and the water won't hold chlorine. Over the course of last week I put 38 lbs of shock in the pool and now have the total chlorine up to 5.0ppm but still 0 free available chlorine.
Can anyone make a suggestion of what I can do to kill the algae? Thank you!
28,000gallon vinyl liner pool with sand filter