IS this being created by the SWG?

[ajumper]

White powder accumulates on the top of my vacuum filter after cleaning.




I have this at the edges of the pool and on tanning deck. I can brush it off easily, but it will return after 10-15 minutes.

 

[PoolStored]

Welcome to TFP!

Collect some, put a drop of muriatic on it. Does it fizz?

How are you testing your water?
Post a full set of water test results.

 

[ajumper]

Welcome to TFP!

Collect some, put a drop of muriatic on it. Does it fizz?

How are you testing your water?
Post a full set of water test results.

Thanks!
I will have to get some MA and check.

I was testing with strips. I had a company maintain the pool for a couple of months. No Bueno.
I am back to doing it, so I have just ordered a

TAYLOR TECHNOLOGIES INC K-2006 TEST KIT COMP CHLORINE FAS-DPD​

My last test from the pool company read: (7/10/24)
5 ppm TC
5 ppm FC
4.8 pH
3200 ppm salt
80 ppm TA
50 ppm CYA
500 ppb Phos

 

[PoolStored]

Post up results when you get your kit.

 

[ajumper]

Post up results when you get your kit.

Yes it did fizz with a drop of MA.

Ph 8.0
CH 250
TA 130
CYA 70
FC 5.0

LSI 0.65

 

[PoolStored]

We don't use LSI, we use CSI. Use poolmath (Link-->PoolMath) to track your results and additions, enable track temperature and CSI and it will calculate it for you.

Your CSI is .32 For SWCG, we recommend -.3 to 0. Your cell is likely creating calcium scale.

1) I'd get a salt test kit. Taylor K-1766 or this... TF Salt Bundle
2) I'd recommend that you lower your TA and pH. Good threads for you. Getting your TA down to 70 would make your CSI = -.05.

Lower Total Alkalinity

A lower Total Alkalinity level can help a pool owner stabalize their pH increase. We'll explain how to lower TA with a little help from muriatic acid.

www.troublefreepool.com

Lowering Total Alkalinity (TA) Quickly with the Acid Aeration Method

Thought I'd make a post that might help others. We've had quite a few members this year with high TA, and I've been typing the same information over and over. I'm going to post this so I can link it to help others. High TA can cause rapid pH rise. High TA is typically caused by high TA fill...

www.troublefreepool.com

3) You might also consider borates.

Calcium Flakes in Properly Balanced Pool with SWG

I'm seeing calcium flakes coming from the returns, most likely being generated in the SWG cell. I collected some flakes this morning with the net and they tested positive for calcium (MA drops test). The flakes are soft and dissolve on contact. Test results: FC: 8 CC: 0 pH: 7.6 (Ranges from...

www.troublefreepool.com

 

[ajumper]

We don't use LSI, we use CSI. Use poolmath (Link-->PoolMath) to track your results and additions, enable track temperature and CSI and it will calculate it for you.

Your CSI is .32 For SWCG, we recommend -.3 to 0. Your cell is likely creating calcium scale.

1) I'd get a salt test kit. Taylor K-1766 or this...https://tftestkits.net/TF-Salt-Bundle-p132.html
2) I'd recommend that you lower your TA and pH. Good threads for you. Getting your TA down to 70 would make your CSI = -.05.

Lower Total Alkalinity

A lower Total Alkalinity level can help a pool owner stabalize their pH increase. We'll explain how to lower TA with a little help from muriatic acid.

www.troublefreepool.com

Lowering Total Alkalinity (TA) Quickly with the Acid Aeration Method

Thought I'd make a post that might help others. We've had quite a few members this year with high TA, and I've been typing the same information over and over. I'm going to post this so I can link it to help others. High TA can cause rapid pH rise. High TA is typically caused by high TA fill...

www.troublefreepool.com

3) You might also consider borates.

Calcium Flakes in Properly Balanced Pool with SWG

I'm seeing calcium flakes coming from the returns, most likely being generated in the SWG cell. I collected some flakes this morning with the net and they tested positive for calcium (MA drops test). The flakes are soft and dissolve on contact. Test results: FC: 8 CC: 0 pH: 7.6 (Ranges from...

www.troublefreepool.com

Awesome. I will look thru all this. Thanks for your response!!