Pool a little cloudy and low PH after heavy rain (2 similar events in the last 2 weeks)

[rich6429]

I normally go overkill with testing...and pool has always been on point and has that TFP sparkle.

That said, opened the pool 1 month ago and havent really been in the water much. Maybe 2-3 times since opening...so needless to say, not very active. I SLAMed after opening and had the sparkle...and continued to have the sparkle over a few weeks until heavy rain last week. The next morning, it was a tad cloudy and the PH dropped to 7.2 along with TA around 60. I panicked and raised the PH (using PH plus) and SLAMed it. Everything was fine after 2 days of SLAMing. FC stayed around 8-10, CYA at 70, PH 7.6 and TA 100.

Until another heavy rain last night...and low and behold, PH was down to 7.2 (TA was 90), FC was 6.0 and pool was a touch cloudy. Not really sure what is causing all of these cloudiness and sharp drop in PH. I never experienced this last year. Normally I would have to bring the PH down (adding PH minus)...but havent had to do so since opening.

thoughts?

 

[clduncan]

Shock level for CYA of 70ppm is 28ppm free chlorine!

 

[rich6429]

Shock level for CYA of 70ppm is 28ppm free chlorine!

when I shocked it a few weeks ago...i did get to 28ppm.

are you suggesting that I shock again?

 

[Deb04]

A pH of 7.2 is fine. No need to raise it unless it gets below 7.

The cloudiness isn’t caused by the pH. Most likely, it is algae.

 

[rich6429]

A pH of 7.2 is fine. No need to raise it unless it gets below 7.

The cloudiness isn’t caused by the pH. Most likely, it is algae.

But it was crystal clear just right before the heavy rain. Could this be algae in my pool that propped up just after the rain? Or algae from the rain? I’m not really sure what is happening. Ugh.

 

[duraleigh]

If you suspect algae, perform an OCLT to confirm or deny it.

Does that heavy rain drain backwards into your pool? Even a little? That would be my guess but it is a guess.