How To Raise Low Chlorine Levels In Pool Water

Uh oh! Your pool isn't sanitised. Middle ear infections and a green or cloudy pool is on the horizon. Luckily, we can help you fix that.

Chlorine is a chemical that is in charge of keeping your pool safe to swim in by killing nasty algae and bacteria, which in turn helps every other pool chemical do their job properly. Sanitisation first!

Before you can fix, maintain or enjoy your pool, you have to test it! Test your pool water using the Aquachek 7 in 1 test strips. These handy test strips test your pool water quickly and accurately, letting you know in seconds if you chemical levels are too low, too high or just right. At $49.99 it contains 100 strips which will keep you going for 2-3 years: 

 

Aquachek
7 in 1 Test Strips
100 Strips

 

FREE CHLORINE:

Too low

What does it mean?
Your pool isn’t sanitised. Middle ear infections and a green or cloudy pool is on the horizon!

Reasons it could be low:

  • Not enough salt in the water for your Chlorinator to produce chlorine (salt should sit around 5000ppm (parts per million)).
  • Salt cell needs cleaning.
  • Salt cell needs replacing. Salt cells have an average life span of 4-6 years.
  • Chlorinator needs replacing. Chlorinators can die for a number of reasons:
    - 8 to 12 years old is the average Chlorinator life span
    - The Power Board or PCB Board (the brains of the Chlorinator) has seized.
    Sometimes it's better and easier on your back pocket in the long run to replace than fix.
  • If you're not sporting a Chlorinator (shame on you), you’re not manually dosing it with enough liquid or granulated chlorine.
  • Your Cyanuric Acid (UV Blockout) level is low, therefore majority of the chlorine in the water is getting evaporated by the sun.

How to fix it

  • If you're sporting a Chlorinator, add salt. Salt should sit around 5000ppm (parts per million). Each 20kg bag of salt equals roughly 500ppm for 60,000L pools.
  • Clean your salt cell (give it an hydrochloric acid bath in 10% acid 90% water for 3-5 minutes until majority of the calcium bubbles up and dissolves).
  • Replace your Chlorinator Salt Cell.
  • Replace your Chlorinator.
  • Use granulated chlorine instead of liquid chlorine and add 1-2 cups - it's much stronger. Always choose NON-stabilised granulated chlorine.
  • Dose your pool with Cyanuric Acid (UV blockout/stabiliser). Always follow dosing instructions on the back of package and never add more than 500g-1kg of Cyanuric Acid at a time.

We're not able to ship Chlorine as it is a dangerous good, though we charge $12 for 25L Liquid Chlorine and $80 for 10kg Non-Stabilised Granulated Chlorine at our shop front in Gosford, NSW.

Click Here For More On How To Fix Pool Water >

Post author:

Natalie Hintze

Head of eCommerce & Marketing at Mr Pool Man,
Co-Founder at Water TechniX

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