My pool was in bad shape this year. Pea-soup green when I opened it, tons of leaves on the bottom. I SLAMed it for about a week, scooped out the leaves, and (I believe) killed all the algae.
The water turned from dark green to a cloudy gray/white color and I couldn't see more than a few inches into it. When I started, I had to backwash the sand filter multiple times per day. Now the water is flowing through my filter and pump well, with a 1 PSI daily increase, which is much better.
My problem is, it's been over a week of constant filtering and the pool is still very cloudy. I can only see about 1.5 feet into it. I have a sand filter and a 1HP Hayward Powerflo Matrix pump. The pool is about 12K gallons (16 x 32 oval above ground).
I’ve been keeping the FC high out of paranoia that something’s still alive in there. Last night it passed the overnight FC loss test with CC somewhere between .5 and 1, so I’ll probably let it drop down to normal levels.
I'm wondering if I need to be more patient and wait for the cloudiness to clear up, because it does seem to be very slowly improving. But at this rate it will be time to close for winter before I can get into it! Maybe I backwashed too much and lost some sand? Maybe I need to replace my sand?
My kids are getting impatient too. Is it safe to enter a cloudy pool if the FC is in normal range and it passes the overnight FC loss test?
Here are my current numbers. I recently got the Taylor K-2006 test kit.
And advice would be greatly appreciated. I love this site! So much great info and helpful people here.