72 hour SLAM, pool still cloudy


Active member
Mar 14, 2017
Charleston, sc
10,000 gal above ground. Had bad algae, no chlorine, added copper algecide, green went away but water became cloudy. I added flocculant. Vacuumed and kept running the pump for a few days. It cleared up some.

Then took the following readings:

Ph 7.1-7.2
TA 40

I raised CYA to 30
Brought FC to 10

I’ve been keeping it at 10 for the last 3 days, day 4 today, pump running around the clock. It has cleared significantly, but not all the way. What should I do?


Gold Supporter
Bronze Supporter
Oct 25, 2017
Ocala, FL
I would start with reading up on how to do a SLAM. You need to get your FC level up to 12 or higher, and make sure it never goes lower than that.