Hello, we are new home owners, as well as new pool owners. We visited Leslies initially to get an idea in regards to basic pool maintanance. We ended up paying for "pool school" which I was not very satisfied to say the least. This covered how to use the pump and skimmers, etc. All my questions regarding chemical balancing - which was the main reason we payed for pool school were answered vaguely. I mentioned that information between Lelies and what I was currently being told conflicted, but still got no justified answers. Leslies has told us that our TDS' were way too high - 4900 for a 20 - 25 thousand gallon pool, and we were to drain at least 3/4ths of it. The pool school guy (who was referred by Leslies) said that was not the case. All we want is to have correct information in regards to maintaining our pool without spending too much for chemicals that we don't need. Thank you for any advice.