New SWG. CYA Question

[jimcam22]

I just installed a SWG after 9 years of dealing with liquid chlorine and I'm in the process of adjusting the chemicals according to the TFP guidelines. I've never actually had to add CYA because the few times it ever got a little low I just used trichlor for a week or two to bring it up. Now I need to raise it from 50 to 70. What is the best way to do that; I've read on this forum sock in the skimmer, sock in front of the return, and some members just pour it into the skimmer. Suggestions?
Also, once I add the CYA how long does it take to dissolve so that I get an accurate test result using the Taylor 100 kit.
Thanks.

 

[mknauss]

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.

 

[jimcam22]

Thanks. Exactly what I needed to know!