
Mustard algae looks like dirt, brushes off in a yellow cloud, and resettles by morning. The kill protocol, the gear-washing step everyone skips, and prevention.

Black algae in a pool digs roots into plaster and shrugs off normal shock. Here’s the removal protocol that works, and how to keep it from coming back.

How to get rid of algae in a pool, start to finish: test, shock to kill level, brush hard, filter 24/7, vacuum the dead bloom, and stop it…

Why is my pool green? Cloudy green means algae, clear green usually means copper. Diagnose the exact cause in five minutes and treat the right problem.