Shock it, brush it, and keep the pump running.
Yes, you can fix it — but it takes a little chemistry and some elbow grease. After heavy rain, your chlorine gets diluted and the pH swings, which gives algae the green light to bloom. The fix is straightforward: shock the pool, brush everything, and run the pump nonstop until it clears.
First, test your water. Adjust pH to 7.2–7.4 (if it’s high, shock won’t