Last Updated on December 31, 2019 by Aiden Lindow

How To Remove Calcium Build-up In Ponds

How to remove calcium build up in ponds should not stress you. How To Remove Calcium Build-up In Ponds

It is a straight-forward process you can easily accomplish. 

Calcium and magnesium occur naturally in water which leads to water hardness. 

There are some localities where the level of calcium and magnesium is high, making the water in such areas hard. 

You may notice the level of calcium in the water in your pond is too high to an extent where it forms scum as you swim or it is causing problems to the fish. 

Too much calcium in ponds is known to cause issues to some form of fish such as koi. 

You need to look for ways you can lower the level of calcium to make the water optimal for your fish survival. 

It is also necessary to keep the water at the right alkalinity levels so that you can enjoy swimming. 

There are several ways you can go about it which depends on the size of the pond. If you have a small pond, then it will be easy to remove the calcium build-up. 

Here are some of the few steps you can take to control the amount of calcium in your pond water:


What you will need to remove calcium from the water

Water hardness testing kit

You need to have the water testing kit so that you can know the exact level of calcium and magnesium in the water so that you can plan accordingly on how you can remove the minerals.

There are several kits out there. You need to review the different water hardness kits available in the market and choose the best. 

There are different water hardness testing kits available in the market.

You need to compare the different kits and decide on the best.

Follow the instructions on how to use the kits and you will get the best results. 

I recommend the pond mater test kit, as it will also test for ammonia, pH, nitrates, and nitrites, up too 500 tests!


Distilled water

You can go for the natural way of diluting calcium in the water.

Remember, calcium is needed for the balance of the water pH.

You can reduce the level of calcium by diluting the water; hence, a source of distilled water is necessary.

Rainwater can as well play the role. You will need enough distilled water to dilute the hard water.

If you have a large pond, then you should be ready to invest in a large amount of distilled water.

You can as well save money by taking advantage of rain water.

Rain water does not have dissolved minerals hence you can direct it into the pond to low the calcium concentration.


Pool acid

You need the acid to react with calcium so that you can form calcium carbonate and calcium silicate, which is easy to remove from the pond water.

The pool acid can be bought from your local stores.

Take time to understand how it works before you can apply it into the pond.

Many pond experts near your home can offer advice on the best type of pond acid you can apply.

Ensure you do not apply too much because it can lead to changing the pH of the water in the pond which will affect the life of fish and other aquatic life in one way or another.


How to remove calcium build up in ponds


Test the water hardness level

You need a water hardness test kit in this stage.

It is necessary to test the hardness levels so that you can know the level of calcium you need to deal with.

The test kits are available in your local shop where you can buy and follow the instructions on how to test the water.

High levels of calcium will indicate, making it easy to plan on how you can remove the minerals.

It can take you a few minutes to know the hardness level after you can proceed to other stages.


Drain the hard water from your pond

You need to drain the water so that you can create space to add distilled water.

If from your test there is a lot of calcium, then you will have to drain a lot of water to create more room where you can add more water to compensate for the high level of calcium.

You can use a water pump of you are dealing with a big pond.

The process of draining the water may take a lot of time but you have no otherwise if you intend to lower the mineral concentrations.

For a large pond you can invest in a large pump which can speed up the process of removing the water.

There are some ponds which have inlets and outlets. You can open the outlet channel and allow the water to run out to a given extent.

It is an easy way because you will not need power to run the pump as you try to regulate the amount of water in the pond.


Add distilled water

After you know the level of hardness, then you will proceed to add distilled water.

Addition of distilled water is an easy way for you to control hardness in water.

You will need the hardness test kit to keep on comparing the level of hardness until it reaches the optimum.

For small ponds, you can add distilled water from your home.

The problem comes in when trying to control the amount of calcium in large ponds.

In such a case, you can take advantage of the rainwater. Rainwater does not contain dissolved minerals; hence, you can let it into your pond, and it will dilute the levels of calcium.

You need to keep on testing the water after which you will add distilled water.

Remember water from your pond will evaporate and the minerals will be left behind.

With time, they will reach a high concentration where you will need to add more distilled water.

the water to ensure it remains at the optimal level where the levels of calcium will not interfere with your comfort as you use the pond.


Use pool acid to remove calcium from the water

You can as well use pool acid to get rid of acid from the water.

It is an easy process which you can easily accomplish.

If you do not like to go the natural way where you will have to dilute the levels of calcium, you can use the pool acid to transform calcium in the water to calcium carbonate and calcium silicate which you can then remove from the water.

It is a process which will require you to buy a pool acid. The pool acid can be ordered online, or you can get it from your local store.

It comes with all details on how to use it; hence, you can follow the instructions provided to remove calcium from the pond water.


Remove calcium carbonate and calcium silicate from the water

If you decide to use pool acid, it will react with calcium to form calcium carbonate and calcium silicate.

You need to remove the salts from the water as well so that you can remain with the right pH.

The process involved in removing carbonate is different from the one you will follow to remove calcium silicate.


Removing calcium carbonate from pond water

Use calcium cleaner to remove the carbonate. You can buy the calcium remover from your nearest shop and follow the instructions. You will also need a pumice stone or scale remover to remove the calcium deposits.


Removing calcium silicate

You can use a pumice stone to remove calcium silicate from water.

It is a process you can easily accomplish because it is insoluble in water.

The main aim of transforming calcium into calcium carbonate and calcium silicate is to have it in the insoluble form so that you can easily remove it from the base of your pond.

It is easy to remove the calcium silicate because it will settle at the bottom of the pond in most cases.

You need to ensure you remove all of it to prevent formation of stains at the base of the pond.

The method you will apply to remove calcium from your pond water will depend on several factors.

For example, if you have a large pool, then the process you will use should be economical for the large pool.

Diluting water can work well. If there are fish in the pond, you should be careful of the methods you decide to use.

It should be a safe method which will not expose the fish in your pond to risk.

You should not worry if there are too high amounts of calcium in your pond.

There are several methods you can apply to regulate the amount of the minerals. It is an issue which many people have to deal with.

Provided you choose the best method, it can be very easy to regulate the amount of calcium and magnesium in the pond.

Take time to ensure you choose the best method which can guarantee quick results.