Pool Sock and CYA

I think the issue is the CYA is quite acidic. With the socks, you won't have the issue of the granules going into the pool filter. Most people do the "sock in front of return" thing.
 
Like James said, the CYA is a bit acidic. If you do not turn off the pool pump until the CYA is completely dissolved, it will not be an issue to dump it into the skimmer sock.
 
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