Quote Originally Posted by NWMNMom View Post
Just a question, if you have an AG pool, don't you plan on a partial drain to below the skimmer and returns anyways to prevent skimmer/return ice expansion damage? That step right there would lower your startup CYA because you have to add water in the spring....

Yes - but when you drain below the skimmer and returns, you actually don't throw out all that much water. It would lower your startup CYA level some, but not substantially.