I wanted to post this comment on determining water leaks. I've read a lot about water leaks and had a leak at my skimmers. Not only did I do a bucket test to confirm, but I also have an SWG in my pool and an EASY way to determine if you have a leak in your pool is when the salt level begins to lower without any water changes. Essentially, the leak also loses salt which resultantly is lowering my salt level. I wasn't sure I had a leak until it was necessary to add salt without any backwashing. Just another thing to look out for when determining if you have a leak in your pool.