I'm soooo embarassed to admit this but have algea. Our pool was awesome and the weather was nice, we used it for like a week and then it got cold and we got busy. I sadly neglected my pool for far too long. We went out today to check on it and it was solid green and smelly. I dumped a big jug of 12% bleach in and backwashed the filter and brushed it a bit as well as threw in the robot.
I'm so mad at myself. Normally I'm so good at taking care of it but life got in the way.
CYA <20 (not sure as i could still see the dot at the top of the tube)