Will CYA granules on bottom of vinyl pool cause problem?

[aylad]

I always add cya slowly directly into skimmer with pump basket removed. This seems to work fine. Any problems with this method that I am not aware of?

That's the method that I use, as well. Just make sure you're pouring it in at a slow enough rate that it doesn't clump up in the pipes before it gets to your filter.

also remember not to backwash your filter for a week or so after the CYA addition to keep from washing it right back out.

Janet