Pool became very cloudy right after pool tech dumped chemicals in it (still cloudy 24 hours later)

golovko

Gold Supporter
Nov 24, 2021
81
Raleigh, NC
Pool Size
20000
Surface
Plaster
Chlorine
Salt Water Generator
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Hi all, I have a weekly pool service for my pool. Part of their job is to test the water and add chemicals as needed. I also clean the pool myself (emptying the skimmer baskets multiple times a week, clean the filter as needed, check water chemistry etc).

Yesterday my pool service tech came out and did the routine cleaning. Before he left he dumped what looks like a powdery substance that comes in a large white bucket with blue text. Hard to see what it was from my security camera footage. What I could see right away is how cloudy the water got where he was dumping it into the water. It was mostly concentrated in the deep end.

I keep my pool open year round and the water has never been cloudy in the year and a half since construction was completed. The water is always crystal clear. I've had the service from the very beginning as well.

The water chemistry before he added chemicals (I don't know what all was added by him) was as follows:
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I stopped by the pool store where he is based and brought in another water sample to be tested. The tech left no notes so they said he likely added calcium and if the pH is high then it won't break down as effectively which leads to the cloudiness. I added 6lbs of pH Down earlier today as a result. I'm guessing he also added shock because Free Chlorine was much higher and there was a half empty bottle next to my pool equipment left behind.

These are the results from today's water test (< 24 hours later):
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What should I be doing or is this normal? I have been brushing the pool since there are large deposits forming on my tanning ledges and at the bottom of the deep end. Brushing them disperses it.