In my ongoing quest to help educate people and prevent our members from being “Pool Stored”, I brought up the question of TDS only because I have actually had a pool store salesman tell me that my TDS was “OFF THE CHART” and I needed to go home and completely drain my pool and re-fill, but before I leave the store, be sure to grab a big bottle of stabilizer and a few other chemicals so I would have everything I needed to get up and running.