Quote Originally Posted by TheGoose View Post
Why would you have chlorine in your well water? Are you using a chlorinator on your well system?
Not answering for Jacob99 but it's common for well water to be chlorinated. We have a chlorine injector that uses diluted household bleach which it injects into the line that brings the well water into the house. That chlorinated water goes into a 150 gal holding tank. When a faucet is opened, water is drawn from the holding tank through a very large carbon filter into the house lines. The chlorine in the holding tank is around 8 ppm. What I draw at the sink is 1 ppm or less.

When I have to top off the pool I turn off the chlorination system and use straight well water. We don't have metals in the well and its alkalinity is right around 50 ppm, perfect for my pool. I usually adjust the FC to 5 ppm after a refill and let it drift back down to its normal 3 ppm.

Didn't mean to highjack your thread, Jacob. Having a good test kit is really very useful when you're using well water.