White powder on pool ledge

[Newbie01]

Hi everyone,

Newbie here. This is only our second season. I've been maintaining the chemicals on my own and has been doing well. However, lately I've noticed white powder on our pool ledge. I've read and asked some people and was told that I have to lower the TA to 60-70 but I've been doing that every week putting 2 gallons of MA and I still have the white powder. Any ideas what's causing it?

Pool is 18,000 gallons SWG

Thank you in advance!

 

[mknauss]

Please post a full set of pool water chemistry test results.

 

[blindsquirrel]

Yes.... Very interested to hear what your pH is.

 

[Newbie01]

I just tested my pool. Here are the results:

FC 3.2
CC 0
PH 8.0
TA 110
Calcium 500
CYA 30
Salt 3600
CSI: 0.61

 

[Newbie01]

I've always had a high PH and TA for some reason. But the white powder didn't happen til now. I'm located in Central Valley California (if that helps) weather here goes as high as 115-118 summer time

 

[reggiehammond]

What chemicals do you add to pool? What type of equipment are you using; filter especially?

Create Your Signature - Further Reading

www.troublefreepool.com

Photos of the equipment pad, photos of the pool in general, and the white powder in question are helpful.
You can confirm the substance is calcium scale if you can collect it; a few drops of Muriatic Acid to the white powder can tell you it's calcium if it's fizzes.

 

[Newbie01]

What chemicals do you add to pool? What type of equipment are you using; filter especially?

Create Your Signature - Further Reading

www.troublefreepool.com

Photos of the equipment pad, photos of the pool in general, and the white powder in question are helpful.
You can confirm the substance is calcium scale if you can collect it; a few drops of Muriatic Acid to the white powder can tell you it's calcium if it's fizzes.

I just been adding MA to lower down TA and PH. I havent used other chemicals. I have intellichlor ic-40
Pentair cartridge filter

Attached is the photo of our system