If everyone can remember, I was the one that couldn't get ride of the algae until I added copper to the pool then it came back. So I drained the pool and cleaned the liner with liquid chlorine and refilled the pool. The pool did good until today when I added 2 scoops of Pool Life Shock to the pool. I returned later in the day and my wife said "its back". And yes the sand color was in the corners of the pool and areas where it was before. Everything was good until I added the shock.
Is there anyway this is a residue from the shock collecting on the bottom of the pool?
If i can remember last time when this happemed I shocked it and it started from there. I slammed the pool for 2 weeks at 26 PPM and it didn't help.
CYA is 0
Due to CYA not even existent in the pool is this causing in the reside problem from the shock. Or is the algae back again. I can get the chlorine levels up.
Im testing with TF-100 and a speed stirrer.