Cloudy Water after Swimming

[JeffSlaton12]

My brother-in-law is getting his pool cleared up using liquid chlorine (10%), has a 30 ft round vinyl liner above ground pool. His test last night was the following:
FC=5.0, CC=0.0, pH=7.5, TA=80, CH=250, CYA=50
The pool math told him the last two nights to add Calcium Chloride, which he did the first night. I told him to not worry about it since he has a vinyl liner pool. He says it is clear but after swimming it gets cloudy.

First - Am I correct that the CH doesn't matter for his pool?
Second - Any ideas on the cloudy issue after swimming?

He is using the website and app, I am just posting for him.

 

[mknauss]

No calcium needed. The app is a tool, not something to follow all recommendations without knowledge. The CH range for a vinyl liner pool is 0 - 650.

As the FC is not near SLAM level the SLAM process is not being followed. Follow the SLAM Process

 

[JeffSlaton12]

He was just trying to maintain it not SLAM. But is what you are saying is that it is most likely dead algae and that he should perform a SLAM? If so, when you SLAM and you vacuum daily, do you have to vacuum to waste?

 

[mknauss]

You said 'clear' so my assumption was they had a cloudy pool or algae. Have them do a Overnight Chlorine Loss Test

Adding calcium can also cloud pool water. So there is no need for them to spend money on that item.

 

[JeffSlaton12]

Ok, thank you very much.

 

[JeffSlaton12]

What about the question about vacuuming to waster during a SLAM?

 

[mknauss]

If you have massive amounts of clumpy algae or other debris, vacuuming to waste may be prudent. But otherwise, no need.

 

[JeffSlaton12]

Great, thanks.