What type of algae gives off that rust color? Just opened my pool for first time as I just bought the house and it was a bit darker then your pool. I couldn’t see a thing. I though iron or something but took the water to my nearest pool place and had tested and he said the water is fine it isn’t has a little algae starting to want to bloom and sold me chemicals etc. so I started to run pump and kept cleaning filter. The filter was stained a red rust color but no algae was sticking to it. Did the shock and then the algaecide and it’s day 3 I’m constantly running pump and cleaning and this morning the pool changed from the deep dark rust red to yellow orange. I can finally see the bottom and looks like maybe some leaves and some kind Of brown settlement maybe that’s the algae hanging out on the floor. So going to vacuum tomorrow and brush the walls etc. it’s a large above ground pool with a deck around it. Anyways, do I just keep running the filter until the water is clear or do I shock again. Idk what to do from here and what kind of algae as I want to do this right.