How to Fix a Cloudy Hot Tub

Do you have cloudy hot tub water? If you do, you aren’t alone.

In this article, we look at how to fix a cloudy hot tub so you can enjoy your hot tub day after day. First, let’s look at the causes of cloudy water.

Cloudy Hot Tub Water

You’ll find there are many common causes for your cloudy hot tub water. They include:

  • Dead algae particles
  • Environmental debris
  • Lack of sanitizer use
  • Bad filtration
  • High pH and/or alkalinity
  • Body oils, lotions and bodily fluids

There are several different ways to cure your cloudy water. It all depends on your particular problem. Let’s look at each of them.

#1: Test Your Water and Use Shock

How old is your water? If it’s been in the tub less than two months, this is a good method. First, you need to know what your chemical levels are.  If they are between the following numbers, you can shock the water. Make sure when you use the shock that your hot tub is running, and the air valves are turned off.

  • pH is between 7.4 and 7.6
  • Alkalinity is between 100 and 150 ppm (parts per million)

Here are suggested amounts:

  • Chlorine or mineral sanitized hot tubs: use powdered chlorine or non-chlorine shock. Follow manufacturer’s directions or see us for help.
  • Bromine sanitized hot tubs: use powdered bromine and non-chlorine shock. Again, follow manufacturer’s directions or see us for help.
  • Biguanide sanitized hot tubs: use the same brand of shock as your chemical system.

#2: Use a Hot Tub Water Clarifier

If you use a clarifier to clear your cloudy water, make sure it is for hot tub use. Don’t substitute pool clarifier. Follow directions on the bottle.

#3: Drain and Refill Your Spa

Finally, you have the option of draining and refilling our spa. This is a good option if your spa water is more than two months old.

Generally speaking, you want to drain and refill your spa two-four times per year. Note: don’t drain and refill if the weather is below freezing. We recommend you wait until temperatures are above 40°.

Final Thoughts

We are here for you! If you have any questions, please contact us or stop by. Our expert service department is here to help you with all of your hot tub (and swimming pool) problems.

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Source: Swim University