I found this excellent description about using the sock method:
As a follow up, specific for SWG pools, should the SWG generator be off for 24 hours if this method is used?
More generally, is there a write-up that discusses best practices for adding chemicals in an SWG pool?
Add the CYA by using what we call the sock method. Get an old sock (no holes) and put the measured amount of CYA you need. Tie the sock closed and either suspend it in front of a return (hang it from your brush pole works with something weighted on the deck) OR if it still allows flow thru the skimmer, place the sock in the skimmer. Every 15/20 minutes give the sock a squeeze to speed up the process. Please DO NOT follow the directions on the container of CYA to just pour it into the skimmer and don't just toss the sock in the pool as the CYA is acidic and can bleach/stain pool finishes.
Once the powder is completely dissolved, wait 24 hours prior to testing your CYA level.
As a follow up, specific for SWG pools, should the SWG generator be off for 24 hours if this method is used?
More generally, is there a write-up that discusses best practices for adding chemicals in an SWG pool?