How Long to Wait to Put Fish in Tank After Conditioner?

When we do a water change, we usually use tap water. But tap water is not always good for the fish in the aquarium, so we need to use distilled water instead.

Chlorine is an effective disinfectant, but it is toxic to fish in high concentrations. Even low concentrations of chlorine can damage the gills of fish.

Hence the need to use water conditioners. They are primarily used to neutralize the chlorine in tap water so that it becomes safe for your aquarium fish.

Water conditioners are generally not harmful to fish when used properly.

How Long to Wait to Put Fish in Tank After Conditioner?

If you don’t wait to add fish at all after adding the water conditioner, especially if you only replace a small portion of the water, then you shouldn’t have to wait long. However, if you are replacing all of the water, you should add the water conditioner first before you put the fish in to ensure their safety.

As I mentioned earlier, chemicals like chlorine can cause stress in your aquarium fish. Therefore, it is important to make sure that the water they live in has been properly treated before you put them in the tank.

Water conditioners usually contain chemicals that are able to neutralize compounds like chlorine and chloramines within a few minutes. For small water changes, you don’t have to worry too much.

For a full water change, first remove the fish from the aquarium, treat the water with a suitable water conditioner, wait the treatment time, and then reintroduce the fish.

For most people, the water conditioner and dechlorinator can neutralize the chlorine within seconds of coming in contact with the chlorine molecules.

For tanks with adequate water flow and an active water pump that distributes the water conditioner evenly throughout the tank, a waiting period of two to five minutes is usually sufficient before introducing fish.

Can I put my fish in the tank instantly?

The short and simple answer is no. You cannot simply put your fish into a tank without any preparation. If you put your fish in a tank right away, they could die or at least develop serious health problems.

Before you put the fish in the tank

  • Fill up the tank
  • Treat the Water
  • Acclimatize the fish
  • Make sure you treat the water before putting the new fish in the tank

Before you put an animal in the water, be sure to test the water quality! You should also think about buying a filter if you haven’t already. If you don’t know how to take care of your pet, read our guide on how to take care of an aquarium or fish tank.

Below are some steps you can take to ensure the survival of the fish you keep.

Step one: fill the tap water into a bucket. Then test its pH level.

Step two: You will need to soften your tap water using one of the following methods: see – How to Soften Tap Water for Your Fish Tank. I have already written an article on this topic.

Step three: After adding the dechlorinator, you should wait 15 minutes before adding fish to the tank.

Step four: Add water conditioner.

Congratulations. You have completed the water treatment. Now you can add it to the aquarium.

Be sure to do a final test on the water to make sure there are no chlorine, nitrite or ammonia levels. If they are too high, you will need to add additional chemicals to lower them.

How long do I have to wait before putting fish in a new aquarium?

When putting fish into an aquarium, there are many things that need to be considered beforehand. One of these is the amount of time the fish should spend in quarantine before being introduced to the rest of the aquarium. Another factor is the time needed to acclimate the fish to the water conditions in the tank. A third consideration is whether or not the fish should be fed live food during the quarantine period. Finally, whether the fish should be kept alone or with another species of fish.

How long do I have to wait before putting fish in a new aquarium

If you have just purchased a new aquarium, you should wait until the water has settled for about thirty minutes before putting your fish in. This will give the water time to clear itself of suspended particles. Once the water is clear, you can test the water quality by taking a small amount of water and placing it in a glass container.

Then add two drops of food coloring in water bowl and mix thoroughly. You can tell if the water is contaminated by the color of the solution. water should quickly change its color.

Once the water is calm, you can put your fish in. Use a fishing net to catch each fish, then slowly put them back into the tank. Don’t worry about disturbing the fish too much in the process.

Do water conditioners kill fish?

If you use a water conditioner, don’t use too much of it. Usually, that’s fine. But if you find that the product is overdosed, don’t use it anymore. Just throw it away.

Since water conditioners are safe, you can put them in your aquarium without removing fish. Of course, it all depends on the amount. You shouldn’t add too much of one type of water conditioner, as this could damage your filter. But you also shouldn’t add too little, because then your fish won’t get enough oxygen.

Even though smaller tanks are more difficult to handle than larger ones, there is no reason why you shouldn’t use them. As long as you follow the manufacturer’s instructions for adding conditioner, the chances of harming your fish by adding too much conditioner are pretty low.

If you want to condition aquarium water, use a water conditioner

There are two ways to condition your water with a water conditioner:


You should always take care of your aquarium water before adding any additives. Before you add anything to the aquarium, you should clean the water first.


You can add the conditioner to the container when the water is added to the container. If you use the tank option, you only need enough conditioner for the water in the tank; no additional conditioner is needed.

How Long to Wait to Put Fish in Tank After Conditioner?

If you are using the hose option, you will need to determine the correct amount of conditioner to treat the entire aquarium. Then pour it slowly into the water as the water flows into the tank.

If you’re not sure about buying shampoo, check out some YouTube videos that explain how to use shampoo properly. Also remember that there are different types of shampoos for different purposes, so you may need to experiment with them before you buy one.

You must use water conditioner whenever you add new water to an aquarium. Basically, all new water needs to be treated before you add it to the tank.

Why Do I Have to Wait to Put a Fish in the Tank?

Fish should be kept in tanks until they reach an age where they can swim unassisted. As they get older, they begin to feed and grow larger.

You should not put fish in an empty tank. Allow them to cycle first. Then wait about six to eight weeks before introducing your fish to its new environment.