How long does it take to clear a green pool?

Most green pools take 3 to 7 days to fully clear depending on how bad the algae is. Light green pools might clear in just a few days, while dark green or black pools can take a full week.

Is it safe to drain a green pool instead of treating it?

Draining is usually not necessary and can actually damage your pool structure, especially if you have an older pool or high groundwater in your area. Treating the water in place is safer, more affordable, and better for your pool long term.

Will the algae come back after treatment?

Not if you maintain your pool properly afterward. Once we eliminate the algae and balance your water, keeping up with regular cleaning and chemistry checks will prevent it from returning.

Green Pool Treatment & Algae Removal

We bring green, swampy pools back to crystal clear blue water fast.

Pool technician treating green algae-filled pool water in Pasadena, CA

Turn Your Swamp Back Into a Swimming Pool

A green pool is more than just an eyesore. It is a sign that algae has taken over your water, and it can happen faster than you think. Maybe you went on vacation for a few weeks. Maybe your pool equipment stopped working. Or maybe the water chemistry got out of balance and algae saw an opportunity to grow.

Whatever the reason, a green pool is not safe to swim in and will not fix itself. The good news is that we specialize in bringing pools back from the brink. Our green pool treatment service gets rid of algae completely and restores your pool to the clear, inviting water you remember. Homeowners across Pasadena trust us to handle even the worst algae infestations quickly and effectively.

How We Eliminate Algae for Good

Getting rid of algae takes more than just dumping chemicals in the water and hoping for the best. We follow a proven process that kills the algae, removes it from your pool, and prevents it from coming back. Here is how we do it:

•Test your water to identify the type of algae and chemistry imbalances
•Apply professional-grade algaecide to kill active algae growth
•Shock the pool with high doses of chlorine to oxidize dead algae
•Brush all surfaces thoroughly to loosen stubborn algae clinging to walls and floors
•Run your filter continuously and clean or backwash it multiple times
•Vacuum all debris and dead algae from the pool bottom
•Rebalance your water chemistry to create an environment where algae cannot survive

Why Algae Grows and How to Stop It

Algae thrives in warm water with poor circulation and unbalanced chemistry. In Pasadena, our sunny weather creates perfect conditions for algae to explode overnight if your chlorine levels drop too low. Even a few days of neglect can turn your sparkling pool into a green mess.

Once we clear your pool, the best way to prevent algae from returning is through regular maintenance. That is why many customers switch to our weekly pool cleaning service after we restore their pool. Consistent care keeps your water balanced and your equipment running properly so algae never gets a chance to come back.

What to Expect After Treatment

Depending on how severe your algae problem is, your pool might take 3 to 7 days to fully clear up. We will visit multiple times during the treatment process to monitor progress, adjust chemicals, and clean your filter. You will see dramatic improvement after the first day, and by the end of the week, your pool will look completely different.

If your filter needs attention or replacement during treatment, we can handle that too with our filter cleaning and replacement service. Sometimes algae clogs filters so badly they need extra care to function properly again. We make sure everything is working right before we consider the job done.

Call (626) 345-7770