yellow algae?

Brand new to group! I’ve been fighting this for about three years. I don’t know if it’s yellow algae or something else. It’s not ‘yellow’, more sand color, but it’s powder like if disturbed. I’ll shock, vac to waste, replace water loss only to have it return. It’s isn’t selective where it...

Hi everyone, I'm having an issue that I hope some more-informed folks can help me with. My pool is an inground 15,000 gallon pool located in South Florida. It's hot and humid most of the year, it rains most days to some extent and my pool is close to the water, so it almost always has a...