Algae or another problem

[Ashandmich]

I have never posted on here. I just read all of the time. Pool started leaking ran out of chemicals etc.. long story short pool filled with algae over the winter. I had ran out of cya testing supplies so just guessed and added a lot of bleach. And kept fc high for almost 1 week. Fc stayed around 20. ? pool went from green to cloudy greenish blue almost over night, but since then no improvement. I cannot see the bottom. My new testing kit came today. Cya was 30 at most. So slam level should only be 12.

Also, I have well water with iron and manganese. Could that be causing some problems? If so how would I fix that?

Cya 30 (at most)
Oh 7.0 or less
Fc 12
Cc. .5
19500 gallon vinyl above ground pool
Sand filter
Please help!

I have backwashes the filter every time the pressure raises.

 

[mknauss]

Welcome to the forum!
You need to address the algae first before the iron. Follow the SLAM Process. Be sure to let your sand filter pressure rise by 25% over clean before you backwash. Sand filters take the longest to clear a pool during a SLAM.
Next time you test FC at 10 ppm or less, check your pH. If lower than 7, test TA. Then post here as you may need to raise your pH and / or TA.
I suggest you read ABC's of Pool Water Chemistry.

 

[Ashandmich]

My ta 140?
Oh 7.2

I’m new at testing so hopefully I am doing this right.

 

[mknauss]

OK -- as long as your pH is over 7 you are good. Stay at the SLAM..

 

[Ashandmich]

Could there be a problem with my sand?

Should the pool still look this dark and cloudy after 6 days?

 

[mknauss]

Have you ever used floc or clarifier and run that through the filter?

It can take quite some time to clear a pool with a sand filter. If you want to accelerate it, you can try using DE -- Add DE to a Sand Filter - Trouble Free Pool

 

[Ashandmich]

No, I never have. I’ve never needed to. This is the first time I’ve ever had this problem.

 

[Ashandmich]

So my fc didn’t drop over night, my cc is still .5
But the pool is still this aqua color. Could it be metals in my well water?

On my 8 day of slamming, no New improvement since day 3.

 

[mknauss]

Metals do not make your pool water cloudy.

Check all your test results and methods. The SLAM Process works.