How to Clean a Green Swimming Pool Fast

very once and while, your pool will get away from you and turn into a total swamp filled with green algae. Maybe you had a bad storm. Maybe you went on vacation. No matter how it happened, we'll show you how you can have your pool looking back to new in no time.

At a Glance








Using your skimmer net, remove as much large floating debris and “algae patties” from the pool as possible.



Set your system to “vacuum to waste” and using your pool vacuum remove as much large debris and sludge from the bottom of the pool as possible.


Add Swamp Treat

Add one (1) bottle of Swamp Treat™ per 20,000 gallons of pool water. 



Brush the walls of the pool. One good brush over the wall should be fine. 



Add approximately 2 pounds/gallons of chlorine pool shock per 10,000 gallons – cascading it around the pool.


Run the Filter

Set your system back to filter, and turn the pump on. Allow to filter for 24 hours. Continue to filter and backwash as necessary until pool clears up.

What You’ll Need

  • Brush attachment
  • Vacuum attachment
  • Swamp Treat Algicide
  • Pool Shock

Extra Tips

  • You’ll likely not be able to see the bottom of the pool. In that case, you’ll need to do it by feel. Try to go over the bottom of the pool at least once, concentrating on areas that feel like they have more growth.
  • Round your pool up to the nearest 5,000 gallons for dosing.
  • Check the filter pressure every few hours and backwash as necessary. Your filter may clog quickly depending on how much algae you have.
  • Backwash your filter when the filter pressure rises above 10 psi than normal.
  • Don’t pour shock directly on colored surfaces. This can discolor your surface.

Still need help?

Still have questions? Need an expert’s advice? Visit our support center for additional documentation and to open a ticket with a Pool Technician.

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