How to get CYA to dissolve?

V___25

Gold Supporter
Silver Supporter
May 30, 2020
807
Central PA
Pool Size
23760
Surface
Vinyl
Chlorine
Liquid Chlorine
I bought a 7lb bag of CYA at Ocean State Job Lot at the end of last season. It remained unopened in the garage over the winter (not exposed to excessive sunlight or humidity). This year, I used up the Clorox brand CYA I had left, about 1lb, and then opened the new bag. Per usual, I put 1lb in the sock and hung it front of the return. This stuff will not dissolve! It hung in front of that return for hours yesterday afternoon, like 4-5 hours and hardly any of it dissolved.
I used the same sock that I used the other day for the Clorox brand and that dissolved fine, within like an hour it was completely gone.

Is there some way I can get this to dissolve so it's usable? Or I am just SOL and should go buy a new bag of Clorox brand that I know dissolves? I really hate to waste it since I already spent the money on it and disposing of pool chemicals is a pain.
If I start over, how do I dispose of this stuff? Both the stuff in the sock that's already wet, and the remaining 6lbs of dry in the bag. I can't return it since I bought it several months ago.
 
Here's the trick. Walk away for a full day. If it doesnt squish out, try the next day.

When it takes longer to dissolve in cold water, the UV isn't bad yet. Even during the season, so long as you have some in there to start, there is no imminent danger letting the CYA soak for a day if it needs.
 
  • Like
Reactions: .ben and Mdragger88
Thanks all. I guess I'm just used to the Clorox that dissolves super quick and never takes hours and hours.
When I fired up pool #2, I had 4 small bags from the same new pallet they brought down and opened for me. One of the bags was mostly bricked and took a couple of days to mush up. Moisture must have gotten in there somehow and the other bags did fine.

I blame pinholes or condensation when a random bag is a dud. IMO it happens across brands.
 
  • Like
Reactions: Mdragger88