Guide: How to Prevent Your Pool Turning Green

A green pool is usually the result of algae taking over, but don’t worry—keeping your pool clear and inviting is easier than you think! As a small business that helps families with pool care, I’m here to give you the essential steps to avoid the dreaded green water.

1. Chlorine: Your Pool’s Best Friend

Chlorine is the key to keeping your pool algae-free. It’s great at killing algae and bacteria. Make sure your chlorine levels are between 1-3 ppm (parts per million). Regularly check your water and top it up when needed. This is your first line of defence!

2. Algaecide: Extra Protection

While chlorine does most of the heavy lifting, an algaecide is a great backup. It helps prevent algae from taking hold and can treat any existing issues. It’s a good idea to use it as a preventative measure, especially during the warmer months.

3. Balance Your pH

Your pool’s pH should sit between 7.2 and 7.8. If it’s too high, chlorine won’t work well, and if it’s too low, you might have corrosion issues. Test your water regularly and use pH adjusters (soda ash or muriatic acid) to keep things balanced.

4. Stabiliser (Cyanuric Acid): Protect Your Chlorine

Cyanuric acid helps stabilise chlorine, preventing it from breaking down too quickly under the sun. Keep it between 30-50 ppm to maintain consistent chlorine levels, so algae can’t thrive.

5. Shock Treatment: A Clean Slate

Every now and then, give your pool a “shock” treatment—this means adding a large dose of chlorine or non-chlorine shock. It’s great for killing algae spores and bacteria, especially after heavy rain or a big pool party.

6. Alkalinity: Keep It Steady

Total alkalinity (80-120 ppm) helps stabilise your pH levels. Low alkalinity can cause pH to fluctuate, making your pool more prone to algae. Adjust as needed with alkalinity increasers or acid.

7. Phosphate Removers: Starve the Algae

Algae feed on phosphates, so removing excess phosphates can help prevent algae growth. Phosphate removers are a simple tool to tackle high phosphate levels in the water.

8. Filtration: Keep Things Moving

A good pool filter is essential for removing debris and algae spores. Run your filter daily, especially in the hotter months, and clean it regularly. Proper circulation keeps everything in balance and reduces the chance of algae buildup.

Final Thoughts

By staying on top of these simple steps, you’ll keep your pool crystal clear and ready for swimming. Don’t let algae take over—regular care and maintenance are key! If you need any help, I’m here to assist with pool care, whether it’s fixing a green pool or giving you tips for keeping it clean year-round.

If you still need assistance, don't hesitate to get in touch. We're experts at Green Pool Recovery, and we're more than happy to help.