New SWG and 300 CYA problem

[Reggie]

Newbie here from 112 degree Phoenix.
I have had a clorine pool and have been proud of the condition I kept it in.
Just had a topline SWG installed. They added 120lbs pool salt. The "purple stuff" and an algecide.
The problem is that I now have CYA at 300.
Any ideas on what caused this?
Is it dangerous?
What should I do?
Regards
Mark

User name Reggie was my dog. He died of old age and doesn't mind me using his name.

[waterbear]

How are you determining the CYA is 300? Melamine precipitation tests for CYA are not accurate above 100 ppm unless the sample is diluted. If the test was done with a test strip they cannot be trusted to give a precise reading. Get the water tested with a liquid test for CYA.

[Reggie]

Thanks for the guidance Evan. I will take it in for testing.
Mark

[SoCalBoo]

as an aside, what size pool do you have? unless you have a really small pool, 120 lbs of salt sounds low

[Reggie]

as an aside, what size pool do you have? unless you have a really small pool, 120 lbs of salt sounds low

14k

checked it today at 3650ppm. They had recomended 3500.

3 x 40lb of Leslie pool salt.

Mark

[dawndenise]

Mark: When you get your CYA numbers back from testing, could you also post how you chlorinated your pool prior to installing the SWG?

Sandy