Cloudy Water out of nowhere

[Watermom]

Either way will work. Personally, I just buy granular CYA for my pool. It's not that big of a deal. You can put it in an old sock and hang it in front of a return jet. Give the sock a squeeze every now and then to help it dissolve faster.

[JimK]

I also use granular CYA. I just add it slowly in the skimmer and let the pump run continuously for 24hrs or so. Based on my own testing this seems sufficient time to dissolve the CYA.

I've read some posts saying it can take a week to dissolve CYA, but I have to wonder where that info comes from as that's never been the case in my experience.

[Watermom]

You kinda want to err on the side of caution ---- making the window longer than it probably needs to be before retesting so that you don't: 1)waste CYA testing reagent
2)think your CYA is all dissolved, decide it is too low and add more and then end up with too much.

It is easy to add more CYA but hard to get rid of it if you have it too high.

[JimK]

You kinda want to err on the side of caution ---- making the window longer than it probably needs to be before retesting so that you don't: 1)waste CYA testing reagent
2)think your CYA is all dissolved, decide it is too low and add more and then end up with too much.

It is easy to add more CYA but hard to get rid of it if you have it too high.

Good point.