Hi, New guy here. I'm new to the forum, but not new to pools.
I've been self maintaining my plaster pool for 15 years and doing a decent job, but this year, I can't seem to beat the algae.
My water is crystal clear, but I've got algae on the walls and nothing seems to kill it. I've used Super60 and shock repeatedly without any real success. When I've used Super 60, I've followed with shock and scrubbed and the algae diminishes, but it's right back the next day.
Any ideas ?