Hi folks. I'm brand new to TFP and have started reading from the beginning. Wow, it's a lot of info. For now, are there any pool owners out there that live in a rural area where you are filling your pool with well water? I've ordered a Taylor pool testing kit, which should arrive next week. I did, however, send my well water to a professional water analysis company and have the results. I have a couple of questions. 1. Should I test my water after it's heated? Do results change with heat? 2. Does anyone know of a great natural gas in ground pool heater that withstands hard water? Our last heater caught on fire after 1 season of use (which for us is 3 months). It corroded terribly. Is this because our pool water was unbalanced? Any advice would be super appreciated. If anyone would like to see the type of water I'm dealing with, I can certainly provide those.