Adding CYA - Little help please

[Rob621]

Getting everything balanced. Looks like I will need to add CYA. Test results as follows:
FC - 3
pH - 7.6
TA - 60
CYA - 20

Pool is in direct sunlight all day. Typically, I have been adding about 1/2 jug of bleach per day. After the winter, this CYA level is the lowest I have ever seen it and it seems adding CYA (especially given the direct sunlight) is needed. Still a relatively new pool owner and not having done this before, I turn to my friends at TFP for advice. What product is recommended to increase CYA, what would you recommend for the level (I saw pool school indicates 30-50 for a vinyl pool with bleach) and how should I add it? Any thoughts on where to purchase are appreciated also. I've read about the sock in front of a return or in a basket. Not to be ignorant, but what is the "sock"?

Thanks for your help!
Rob

 

[Butterfly]

CYA (cyanuric acid) is also called/sold as Stabilizer or Conditioner. You can buy it at most Walmarts and big box stores and pool stores.

The "sock" is just an old sock, (the kind you wear on your feet :lol: ) but with NO HOLES!

 

[Butterfly]

I recommend you shoot for a CYA of 40. Wait a week, retest and adjust up to 50.