How To Clean a Green Pool In 24 Hours

You come home after a short getaway abroad, and all you want to do is relax. You take a nap and unpack, then head out to your pool to cool off. But instead of crystal-clear waters, you are greeted by a hideous green pool! Why did this happen?

A green pool is caused by an overgrowth of algae, which can occur due to various reasons like improper maintenance, lack of filtration, inadequate circulation, or improper pH balance. The good news is that it’s not too difficult to clean a green pool.

With the right steps and some patience, you can have your pool looking clear and inviting in just 24 hours. All you need is a few bags of shock, liquid test kits, a couple of pool cleaning brushes, and a bottle of pool clarifier! Without further due, Let’s dive straight in.

Step-by-Step Guide on How to Clean a Green Pool in 24 Hours:

Identify the Cause

1. Identify the Cause:

The first step in cleaning a green pool is to identify the cause of the problem. A green pool can be caused by a variety of factors, such as algae growth, low chlorine levels, pH imbalance, poor circulation, or lack of filtration.

2. Assess Water Chemistry:

Before treatment, you need to create an environment that allows the shock to function efficiently. For this, you need to check the pH and alkalinity levels and adjust them within an optimum range of 7.4 – 7.6 (by adding pH or alkalinity fixer powder as needed).

3. Scrub Floor and Walls:

Then, to facilitate algae spore elimination, you need to make sure no algae is clinging to the pool walls or floor. For this, you need to scrub the pool walls and floor with a pool-cleaning brush.

4. Shock the Pool:

Next, it’s time to shock the pool. Calcium Hypochlorite is the green-to-clean pool chemical for this job! Normally one pound of shock is required per 10,000 gallons of water.

For a green pool, you need to double that amount. If the pool is a very dark green (which represents a higher algae volume) you need to triple the amount. And quadruple the amount if the pool appears blackish green.

5. Filter It Out:

To properly allow the shock to disperse and do its job, you need to run the pool filtration system for a minimum of 8 hours. Make sure to do this at night, because the sunlight can react with free Chlorine and negate its ability to bind with and eliminate contaminants.

Add Pool Clarifier

6. Check Pool Color:

In the morning you need to observe the color of the pool for any persisting hints of green. If it exists, then shock the pool again at night with the same amount of shock. The pool must be cloudy blue to indicate that all algae have been eradicated.

7. Add Pool Clarifier:

Add pool clarifier powder and run the filtration system again to get rid of the cloudy appearance of the pool water. 

Make sure to clean your filtration system to remove the algae waste.

8. Adjust Water Chemistry:

Recheck and adjust your water chemistry levels for healthy use. That’s it.

FAQs: How to Clean a Green Pool In 24 Hours? 


Cleaning a green pool in 24 hours is possible if you follow the steps outlined in this article. Regularly test your pool water to ensure proper balance and regularly clean your pool to prevent algae growth.

By using the right products and equipment, you can quickly and effectively clean your green pool and get back to enjoying your backyard oasis in no time. However, if you find yourself struggling with the process, don’t hesitate to seek help from a professional pool cleaner.

We hope this article has been helpful to you and has given you the information you need to tackle a green pool in just 24 hours. For more tips and advice on pool maintenance, be sure to check out