How To Add Aquarium Salt To Freshwater Tank (And Which Aquarium Salt Is Best!)

Want to learn how to add aquarium salt to freshwater tanks?

It’s not easy to understand how to use aquarium salt and/or how much to add to your freshwater tank. However, it’s something you have to concentrate on and put at the top of your to-do list.

Adding enough aquarium salt to your freshwater tank can have a life-changing impact on the fish. This is why it’s an essential part of maintaining your freshwater fish tank.

This guide is going to take a detailed look into how to add aquarium salt to freshwater tanks and which aquarium salt is best for your setup.

Best Aquarium Salt for Fish Tank (EDITOR’S CHOICE)

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The API Aquarium Salt is exceptional when it comes to preserving your fish tank and making sure everything is as healthy as necessary. This is a highly-rated aquarium salt that offers a good amount of electrolytes while promoting good fish health.

Having this solution by your side during the water changing process is imperative. It can go a long way in alleviating fish disease and keeping your fish healthy year-round.

How To Add Aquarium Salt To Freshwater Tank

Dissolve the Salt in a Separate Container

A common mistake made by fish tank owners is to add too much aquarium salt.

This can be devastating and it can have a negative impact on your fish’s health. This is why it’s important to understanding the size of your fish tank, how much water is being changed in the tank, and what type of aquarium salt is being used.

To do this the right way, it’s recommended to take a separate container. In this container, you are going to add the salt and water before mixing them together.

By dissolving the aquarium salt in a separate container, it’s easier to keep the fish healthy during the process.

Why is it important to use a separate container for adding aquarium salt?

It comes down to how the fish is going to react to the salt as soon as it is added. When you don’t take the time to dissolve it, there can be a considerable amount of water that enters the fish tank filled with thick salt.

When this happens, the fish will start swallowing the salt and end up dealing with the resulting symptoms.

Your goal as a fish tank owner is to not only learn how to add aquarium salt to freshwater tanks but also make sure it’s added safely. There is nothing worse than doing all the hard work and then watching as it has the opposite effect on your fish!

It’s your responsibility to use a safe approach to adding aquarium salt. This means finding a separate container and creating your mixture before adding it during the water changing process.

Remember, don’t rush the mixing process because the salt should be fully dissolved. You can run your finger through the water to make sure it’s not grainy. This is a must to make sure small grains aren’t getting through and doing damage to your fish’s health.

How To Add Aquarium Salt To Freshwater Tank

Add Salt Based on the Amount of Water Being Changed

Let’s assume you have taken the time to dissolve the aquarium salt.

How much aquarium salt do you need for a freshwater fish tank? This is an essential question all fish tank owners need to ask well in advance.

In general, you are going to want to take a look at the amount of water being changed in the fish tank.

If you are changing 50% of the water then you are going to add the equivalent amount in aquarium salt. The general equation is 1 tablespoon of aquarium salt per gallon of changed water.

Follow this equation and you are going to be well on your way to a cleaner, healthier environment for your fish.

Adding enough salt for the entire fish tank is hazardous and should never be an option. Focus only on the amount of water being changed.

Unfortunately, when you start to learn how to add aquarium salt to freshwater tanks, the average person overdoes it. They believe it’s better to add more aquarium salt because it’s good for the fish and is going to make them healthier!

However, this is not how it works scientifically and you are only going to be increasing the risk by adding too much aquarium salt.

There’s a reason for following the equation listed above.

By following the equation, you are going to have enough changed water (usually 50%) that is untouched. This is imperative because the natural environment for a fish is going to have this type of blend.

Just like most things that are healthy in life, too much does more harm than good. For example, let’s assume you know fish food is essential for a fish to survive, are you going to dump the entire bag into the aquarium and hope for the best?


You are going to measure the amount of fish food being added. This rule applies to aquarium salt as well.

Keep this in mind as you start to figure things out and make it a part of your maintenance routine.

Use the Right Type of Aquarium Salt

When you learn how to add aquarium salt to freshwater tanks, it’s also important to buy the best aquarium salt for your fish tank.

If you start using the wrong type of aquarium salt, it’s going to put the fish in harm’s way.

Several studies have been done on this subject and the type of aquarium salt does make a noticeable difference. In some cases, the aquarium salt is made out of a blend of additives and natural ingredients, which makes it relatively unsafe for the fish.

As a result, you should be looking to buy 100% organic salt that has been sourced from evaporated seawater.

There is nothing worse than putting in the time learning how to add aquarium salt to freshwater tanks and then watching it ruin your fish’s health. This happens because you didn’t have the right blend in your hands.

To make sure you are buying the right aquarium salt for your freshwater tank, take the time to analyze the underlying ingredients in the product. The best option is going to be organic, made of evaporated sea water and is going to be designed specifically for freshwater setups.

How To Add Aquarium Salt To Freshwater Tank

Have Patience While Waiting for Results

To the surprise of many fish tank owners, the results aren’t going to be immediate.

Instead, you are going to start to see a change in your fish’s health and behavior over the long-term. This can take weeks and/or months when it comes to seeing a significant change.

Your perspective should be simple when it pertains to adding aquarium salt. Focus on adding the same amount of aquarium salt each time the water is changed and make it a habit.

After a while, the results are going to start revealing themselves.

API Aquarium Salt

Experts Say...
Patience means avoiding making unnecessary adjustments to the fish tank and/or adding more salt.

There are times when you are trying to learn how to add aquarium salt to freshwater tanks in a bid to improve your fish’s health. This is a natural occurrence and something a lot of fish tank owners deal with regularly.

However, this is the time to be as patient as you can be.

Do not start making rapid adjustments because the water is going to be ruined. This can harm the fish and cause them to develop new health issues that weren’t present before!

Your patience is just as important as taking action in a situation such as this. Yes, adding aquarium salt to a fish tank is key but that’s only when you are patient.

Final Thoughts

Want to figure out how to add aquarium salt to freshwater tanks?

It’s not something the average fish owner understands but it all comes down to using the right type of aquarium salt. With a high-quality aquarium salt for your fish tank, it’s easier to improve a fish’s health over the long-run.

Follow the steps mentioned here as you learn how to add aquarium salt to freshwater tanks.

Whether it’s paying attention to the amount of water being changed at any given moment or choosing the right aquarium salt, it’s all about making a long-term change.

For more information about taking care of your freshwater tank, please read through the following guides such as – how to cycle water in a fish tank, ways to heat a fish tank, getting rid of cloudiness inside a fish tank, and how to find the right fish tank.

Using the right approach to adding aquarium salt is one of the best decisions a fish tank owner can make. Focus on understanding what your freshwater tank needs and then begin implementing the steps listed here.