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what causes foam in a hot tub

Getting into the hot tub should be a relaxing experience, like taking a bath and getting a massage at the same time. One of the ways in which baths and hot tubs differ is the addition of soap to create foam and bubbles. In the bath, foam can add an extra dimension of luxury,  scent, moisturisation, and fun (especially for the kids), but in a hot tub, foam indicates that the water has become dirty and needs changing. Today, we're going to look at what causes foam in a hot tub, so that you can learn how to enjoy a crystal-clear hot tub for longer.

What are the main causes of hot tub foam?

When it comes to hot tub foam, there are a few main culprits that you should watch out for. Hot tub foam usually occurs when a hot tub has been used by multiple people for a prolonged period of time, eg. after a hot tub party.

While it's great that you all had a nice time and made the most of the hot tub, you probably failed to make sure that everyone was squeaky clean before they took a dip. After all, who wants to be a party pooper and insist that everyone takes a shower when they're busy celebrating and popping the champagne bottles? Here are a few things that can cause hot tub foam:

  • Body lotion
  • Skincare products
  • Fake tan
  • Makeup
  • Excess laundry detergent
  • Deodorant 
  • Hair products
  • Body oils

To prevent a build-up of foam in your hot tub, it really is important that everyone using the hot tub has showered and removed as many of the above-mentioned surfactants as possible. It only takes a few minutes to rinse yourself in the shower, and it will make a difference to the quality and longevity of your hot tub water.

Are these the only things that cause hot tub foam?

No, while personal products are one of the main causes of hot tub foam, they're not the ONLY cause. Another reason that foam builds up in hot tub water is if there's a chemical imbalance. That's why it's so important that you check and regulate the chemicals in your water on a regular basis. 

Water with a low calcium content is known for creating excess foam. The low calcium content reduces the surface tension of the water in the same way that a build-up of soap, lotions, and dirt will. 

How do you treat foamy hot tub water?

If you've got a problem with foam in your own hot tub, it can be fixed. But first, you'll need to diagnose the cause of the problem. If you've recently thrown a hot tub party with all of your friends, then the cause might be pretty obvious, but if you're noticing foam in your hot tub for no apparent reason, then it's time to do some testing. Take a look at our hot tub testing kit here!

If the problem is the water balance

If the test shows that the foamy water is being caused by imbalanced water, then it's time to treat the water. Here at Premier Hot Tubs, we offer a wide range of hot tub chemicals that you can use to rebalance your water. Depending on the type of hot tub you have, and the hardness of the water you're adding, the chemicals you will need to rebalance it will be different. You can browse our full range of chemicals and pH-balancing products below.

Hot Tub Chemicals >

If the problem is dirt buildup 

If the test shows that the water balance is fine, then it's probably a build-up of dirt and residue that's causing the foamy water. In this scenario, you'll need to drain the old water from your hot tub and replace it completely. This may seem like an inconvenience, but it's important you change the water in your hot tub on a semi-regular basis if you want to keep your spa running properly. 

Find out more: How Often Should You Change Hot Tub Water?

A quick fix for hot tub foam

Here at Premier Hot Tubs, we understand how frustrating it can be when you notice a build-up of foam in your hot tub. If you're looking for a quick fix to take the foam away, why not give our innovative product, FoamAway a try? This anti-foam product will help to tackle stubborn hot tub foam, so that you can sit back, relax and enjoy your hot tub for longer. 

FoamAway

Buy FoamAway Now!

 

So, whether you've been tackling a problem with hot tub foam, or you just want to prepare yourself before you purchase a hot tub, we hope you've found this blog helpful. If you have any questions about hot tub maintenance or would like to order one of our premium hot tubs over the phone, give us a call on 01603 45 45 45. We're always on hand to help!