floater

First, a huge thank you to everyone on the board--the info here had me SLAMing my pool to clear, and all the advice has worked great so far! I'm leaving town for a week, and I don't have anyone who can check the pool/add chemicals while I'm gone. So far, I've been using liquid chlorine (about...

New in-ground gunnite pool in Michigan in July 2022. Filled with pristine tanker water. Our pool guy closed it in mid-November, 2022 with a mesh cover. He opened it in late-June 2023, and the water was almost perfectly clear, but the walls were covered in rust-like stains. (See attached photos…)...