Green Pool Cleaning
WHAT'S A GREEN POOL AND WHAT CAUSES IT?
A “green pool” refers to a pool or spa where the water has become discoloured and appears green due to the presence of pool algae or other contaminants. In New Zealand, warmer North Island climates may see more algae growth, while cooler South Island conditions can slow it down.

Pool algae growth
The most common cause of a green pool is algae growth. Algae thrives in water with an imbalance in chemicals, particularly low chlorine levels.

Insufficient pool chlorine
If chlorine hasn’t been regularly added or the pool has seen heavy use, especially in warmer North Island climates, there may be insufficient chlorine to prevent pool algae.

Pool pH imbalance
Improper pH balance can reduce chlorine’s effectiveness in treating a green pool. In New Zealand’s varying climates, especially the warmer North Island, maintaining pool pH is key to preventing algae growth.

Poor Circulation
Poor filtration and circulation can lead to green pool water, and insufficient sanitation levels. It’s recommended not to swim in the pool until it’s treated.
Algae blooms in pools are often caused by poor filtration, circulation and an imbalance in your water’s chemicals. This can lead to inadequate sanitation levels and can lead to unsafe swimming conditions.

HOW WE CAN HELP WITH A GREEN POOL
Our certified pool service technicians will assess your pool and create a customised green pool treatment plan to remove algae and restore it to its original condition. Using premium products and equipment, we ensure guaranteed results in green pool cleaning, tailored to New Zealand's unique climate conditions.
In addition to removing algae, we can also:
Balance your pool ph
Clean your pool surfaces
Repair any damage to your pool
Provide pool maintenance tips
GREEN POOL’S TRANSFORMED
WHAT OUR CLIENTS SAY
Your experience matters. Your feedback helps us enhance our service and deliver the best care possible. See what our clients have to say and how their insights inspire us to continually improve.





Never had a spa before so first time using Brendon/Poolwerx who treated us like a long-time valued customer.
Great communications and very efficient. Solved all the problems and brought our spa back to life. Kids (and wife) loving it.





Completed a pre-purchase pool inspection for us and even offered to do a 1 on 1 pool maintenance session if we purchase the property (or any other property with a pool!)




















We look forward to working with them in the future.






























Request a Quote or Enquire
Our experts at Poolwerx can help you fix a green pool fast. Our professional technicians are ready to provide you with high-quality service.

Select the ‘Get Started’ button above and complete the form.
We offer a variety of pool cleaning packages to suit your individual needs and budget. Fill in your details and let us know how we can assist.

Our local Poolwerx experts will be in touch within 24 - 48 hrs.

We get you booked in and ready to go. Sit back and relax.
Green pool FAQ’s
Got questions about green pool water? Check out Poolwerx's Green Pool FAQs for expert advice on green pool cleaning, treatment options, and more to keep your pool crystal clear.
-
No matter how green your pool water has become, our certified pool service technicians can restore it to its best! In New Zealand’s varying climates, it's essential to use the right mix of chemicals for effective green pool treatment. Start by ensuring your pool pH and water balance has been properly tested to determine what chemicals are needed to treat your green pool. Poolwerx can test your water in just 60 seconds to determine your problem. Find your local Poolwerx for expert green pool cleaning and algae removal services.
-
Swimming in green pool water is not recommended, as it can harbour harmful bacteria, parasites, as well as algae. To ensure a safe swimming environment, contact your local Poolwerx for immediate green pool cleaning. Our pool service technicians will test your pool pH and water quality in order to create a personalised green pool treatment plan. Don't risk your health - trust Poolwerx to restore your pool back to its optimal condition.
-
The turnaround time for treating a green pool can vary based on its size, your local climate, and the time since the last service, and the severity of the pool algae buildup. Our pool service technician will carefully balance your pool pH and apply the exact chemicals needed for effective green pool treatment.
-
To effectively treat a green pool, a combination of chemicals is essential. Chlorine acts as a sanitiser, pH adjusters regulate pool pH, algaecides prevent pool algae growth, and clarifiers improve water clarity. Shock treatment eliminates contaminants, while stabilisers protect chlorine levels.Check our shop for a variety of chemical options and reach out to your local Poolwerx store for expert assistance in fixing your green pool.
-
Yes, it is possible to over-shock a green pool. While shock treatment is an effective way to combat pool algae and sanitise the pool, using excessive amounts of shock can lead to other issues. Over-shocking can lead to high chlorine levels, which may irritate skin and eyes, damage pool surfaces, or bleach pool liners. To treat green pool water safely, it’s essential to follow the recommended dosage or consult with a pool service technician for expert guidance. They can ensure proper green pool treatment while balancing your pool pH and eliminating pool algae effectively.