Cloudy Water from algae

[Jasheon]

So I have this above ground pool that was drained and the liner was replaced. It was filled back up then it started to rain and continued to rain for about 2 weeks non stop. The pool developed a lot of algae, the pool turned a dark green color. I added a bunch of granular pool shock after the rain finally let up. The pool turned turned from a dark green into a light green. Now it's a blue color but very cloudy. I added some flock, then came back the following day and I could see the bottom. So I vacuumed the pool and as I was vacuuming I could see clouds coming out of the 2 returns. So what I was vacuuming is just going right back into the pool. After I was done vaccuming I cleaned out the cartridge filter. The pool is still cloudy and I am not sure what to do. I can't seem to get rid of the cloudiness. If I flock the pool again and vacuum, the dead algae (I assume) will just get right back into the pool. I can't stand cartridge filters!!!

7k gallon above ground liner pool
A single cartridge filter
Fc 2
Tc 2
PH 7.5
TA 95
CH 50
CYA 20

[aylad]

The only thing you really can do is to keep the filter running and give it some time--as you know, cartridge filters are often way undersized for the pumps that are put on some of these AG pools, and it takes a long time to clean up a bad algae bloom. In the meantime, I would get that chlorine back up-- a Cl of 2 ppm is the absolute lowest you want it to be with a CYA of 20--if you let it get any lower, then algae is going to grow faster than you can get the old dead algae filtered out.

Have you checked the chlorine levels at night and again in the morning to make sure that you've actually killed all the algae? Sometimes it's growing when you can't physically see it...

[Jasheon]

Well I finally figured out what to do, I went ahead and took the cartridge out of the filter and put it on where it was just back washing the water out of the filter instead of trapping into the cartridge. I did that to vacuum the rest of the dead algae that settled to the bottom of the pool. I lost a lot of water that way but finally got rid of the dead algae. The pool is mostly clear now, I will just continue to keep the chlorine levels high and it should clear up.

Thanks.