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What Is Calcium Hardness And How Does It Affect Your Hot Tub

For first-time hot tub owners, it can sometimes feel like there are a lot of things that you need to learn.

However, if you do feel like this, don’t worry, once you get some background information on the steps you need to take and a schedule together things become much easier.

One thing that’s important to look at is the calcium hardness in your hot tub.

Some people may not have heard of it before but it is important for ensuring that the water in your hot tub is in the right conditions.

To learn more about calcium hardness and how it affects your hot tub, then read on.

What Is Calcium Hardness?

Before we get into the different aspects of calcium hardness, it’s always good to get an idea of how it works.

Calcium hardness is simply a measurement of how much calcium there is in your water at any time.

The calcium tells you whether or not you have too much calcium in your hot tub, and you can consider what options you have after this.

We do recommend that you test your calcium regularly particularly if you start noticing any issues with your water.

If there is too much calcium in your water, there are a few signs that might give you an indication of this.

One is that your water can become cloudy, this is because of a large buildup of calcium in your water.

Another sign is if there is scaling that starts to form, scaling can typically start to form if calcium levels are too high and it can create a crusty-looking white scale around the hot tub.

This includes areas like the piping, the jets and cracks, and openings in your hot tub.

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What Level Of Calcium Should You Have?

You may be reading this and thinking that if calcium hardness is so bad then why do we need calcium at all?

However, calcium actually plays an important role in ensuring that your water is balanced correctly to prevent your hot tub water from scaling or becoming corrosive.

The correct amount of calcium that you should have in your hot tub water is 150-250 ppm (parts per million).

The key is to try and keep the calcium levels in your water in this range at all times and of course, there are times when it may fluctuate.

What Should You Do If Your Calcium Levels Are Too High?

High calcium levels are generally anything over 250ppm (parts per million) and you can use a calcium test cell or calcium testing kit to check if it is too high.

If your calcium levels are too high then you will need to drain your water to get rid of it.

Depending on how high your calcium levels are, you can either do a partial drain where you remove some of the water or a full drain where you remove all the water.

If you don’t take the time to fix high calcium levels then it can cause longer-term damage to your hot tub which is the last thing you want.

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What Should You Do If Your Calcium Levels Are Low?

Another thing that sometimes happens is that the calcium levels in your hot tub can begin to drop.

If you have low calcium levels in your hot tub then this will love the overall alkalinity in the water.

This in turn can cause damage to your hot tub and your hot tub equipment due to the corrosiveness of the water.

Some signs of a low calcium level are if your hot tubs railings and metal objects are rusty and leave stains behind.

The good news is that raising your calcium levels is fairly easy and you can do this by using some calcium hardness increase for example calcium chloride to your water.

Of course, we would recommend that if you are going to do this you should follow the advice and instructions on your hot tub solution.

After reading this guide on calcium hardness, we hope you feel more confident about handling any calcium issues you may have. If you would like to get more useful tips on choosing and running your hot tub then why not check out our other blogs.

Ready to buy a hot tub? Scunthorpe Hot Tubs have been leading the industry for over 8 years and have over 60 hot tubs to choose from. Why not browse our full range of hot tubs now and see if the perfect hot tub might be just a click or two away.

Prefer to speak to someone? Give us a call on 0800 808 5396 or visit our showroom and we can help you choose the best spa for you. 

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