We just got our CYA in the mail and are about to add it. I have read that people say to put it in a sock in the strainer or in front of a return (but not to allow it to touch the wall). I was going to put it in our strainer, but wanted to make sure I was understanding it correctly. The only strainer we have is srainer that goes from the hose that exits the pool to the sand filter (so hose, strainer, sand filter, it came with the filter) and then the sand filter, then the swg and then the return to the pool. I know some people have strainers in the pool or have added them to the walls. Just want to make sure I am putting it in the correct spot. Thanks for your help.