Plaster in Polaris

Eaaaaaagle · Jul 4, 2023

I’ve been getting a lot of blue sand which I’m guessing is plaster in the Polaris bag. I do see splotches in spots and a few small white spots. I’m wondering what I can do to stop this and if I’m doing something wrong.

We moved here last august so it’s all still relatively new to us. I believe the pool is about 9 years old.

I’ll attach the photo and this morning my results are:

Fc 40
PH 7.8
TA 80
Cya 50
Ca 390

I added a lot of calcium this year to get it up and also keep adding acid to keep ph low since we have a waterfall and it creeps up.

Thanks

wireform · Jul 4, 2023

The calcium is good now but it may not have been kept up all 9 years so you will get some of that and nothing you can do. What concerns me is why you have the FC at 40. With a CYA of 50 the slam level is 20 so it's not safe to swim until the FC drops to 20.

Eaaaaaagle · Jul 4, 2023

wireform said:
The calcium is good now but it may not have been kept up all 9 years so you will get some of that and nothing you can do. What concerns me is why you have the FC at 40. With a CYA of 50 the slam level is 20 so it's not safe to swim until the FC drops to 20.

Sorry that was a typo. Should have been 4

wireform · Jul 5, 2023

Eaaaaaagle said:
Sorry that was a typo. Should have been 4

The 4ppm FC is minimum for the CYA of 50 you have and it's what I call skirting with danger when the target is 6-8 ppm FC. Any slip with the FC going unforseen will get you in trouble.

Eaaaaaagle · Jul 6, 2023

Yeah that was the test in the AM and then I add the suggested amount to get back up to 8

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Plaster in Polaris

Eaaaaaagle

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wireform

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wireform

Eaaaaaagle

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