So I'm a month into my new pool and I have some brown looking stuff at the bottom all of a sudden. I couldn't brush it off, so I'm thinking it's algae. Here's a picture:
Am I right? I tested my pH and Cl this morning and the Cl was low (probably around 0.9) so I added bleach immediately (trying to get it over a 2). The pH was around 7.7, so I added muriatic acid (trying to get it down to 7.4). FYI - my SWG hasn't been started yet.
Any advise on what I should do?