A green pool is not dirt. It's an algae bloom, and in South Florida it's the fastest-moving pool problem there is. Between the heat, the sun, and the afternoon storms that dump rainwater straight into your water chemistry, a pool that was clear on Sunday can be visibly green by Tuesday.
The cause is almost always the same: free chlorine dropped to zero and stayed there. Sunlight burns chlorine off fast, and without enough stabilizer (cyanuric acid) to protect it, a Miami-Dade or Broward pool can lose its entire sanitizer load in a single hot day. Add a heavy rain that dilutes the water and pushes pH out of range, and algae has everything it needs.
Here's what most people get wrong: dumping in chlorine won't fix a green pool on its own. If pH is too high, the chlorine you add is chemically far less effective — you can pour in shock and watch almost nothing happen. And once algae has attached to walls, steps, and the waterline, it has to be physically broken loose or it just regrows from the same spots.
A real recovery follows an order. Test and assess how deep the bloom has gone. Correct pH first so the shock will actually work. Apply a shock dose sized to the pool's true volume, not a guess. Brush every surface intensively to break the algae free. Run the filter hard, backwash or clean it as it loads up, and vacuum the dead algae out — it settles as a grey layer on the floor once it dies.
Then comes the part people skip: follow-up. One shock treatment rarely finishes the job. The pool needs to be rechecked, redosed, rebrushed, and revacuumed over the following days until clarity and balance actually hold. That follow-through is the difference between a pool that stays clear and one that goes green again a week later.
If your pool has gone green, call Pool Vice at (954) 305-5734. We handle green pool recovery across Miami-Dade and Broward, and we follow up until the water is genuinely clear — not just less green.