Learn How to Get Rid of White Fungus in Your Fish Tank?

If you own an aquarium, chances are at some point in time you’ll encounter white fungus growing in it. Many aquarists consider this to be one of the most common problems they’ll face in their fish tank.

Luckily, however, it’s not that hard to get rid of white fungus in your fish tank. You just need to know what types of products to use and when to use them. So let’s get started with what you can do to kill white fungus in your fish tank.

How to Tell if You Have Fungus

Have you noticed white filmy patches on your fish tank? There are several common species of fungus that you might be able to identify, but only one type that is harmful.

If you’re concerned about white mold in your aquarium, there are a few symptoms and conditions that will help you diagnose whether or not it is harmful. However, if you’re unsure and want to err on the side of caution, removing all visible growth from your water source is generally recommended.

What Causes White Mould on Fish Tanks?

Mold is a problem that can affect any fish tank, but it’s more likely to appear in poor conditions. This white mold spreads quickly and can start growing on your fish tank within hours. To keep your fish tank free from white fungus you need to know how it grows and how to stop it from spreading.

It’s easy enough to treat, though there are ways you can reduce its likelihood. If you spot any of these symptoms at home take action immediately. Read on to learn how to prevent, treat and remove unwanted white fungus around your fish tank for good. It doesn’t matter if you have an aquarium with freshwater or saltwater fish – white fungal growth will still grow on them if they are not maintained properly.

Preventing the White Fungus in a fish tank

Maintaining your fish tank is important for keeping mold from growing. The first step in preventing white fungus is to keep your tank clean. You should change out a portion of water each week and perform a partial water change once a month. If you have live plants, be sure they are getting enough sunlight, as the light will also help prevent mold growth.

Another step is to keep a close eye on your water temperature. Your fish tank should have a stable temperature of 68-74 degrees Fahrenheit. Any warmer or colder and you risk raising or lowering your water’s pH, which can cause mold growth. If your fish tank does start growing white fungus, cleaning it as soon as possible will help prevent it from spreading through your tank.

You will also want to make sure you don’t keep old food in your tank. While it may be fine for a day or two, you should remove any leftovers from your fish tank within 24 hours. If food is left in your tank too long, it will begin to break down and decompose, causing ammonia and excess nitrates which can grow mold. Likewise, if there are dead fish in your tank, remove them as soon as possible.

If you have a fish tank that is already growing white fungus, there are a few steps you can take to clean it up. The first thing you should do is remove any dead fish from your tank. Next, you will want to start siphoning water from your tank into a bucket or another tank. This is because once mold starts growing in your fish tank, it will grow on anything wet in your aquarium as well as on any plants and decorations.

Is white fungus contagious?

If you have a fungus problem in your fish tank, there’s a good chance that it could be contagious, especially if it is spreading fast. As soon as you detect a fungus problem, you should contact a professional or at least somebody who knows how to handle these situations.

It’s best not to take any chances when dealing with something that can spread quickly and cause harm to other living creatures like your fish.

To get rid of white fungus in your fish tank, make sure you follow these tips:

  1. Stop feeding your fish until you can get rid of white fungus in your fish tank. The same applies if you’re putting new water into your tank and want to make sure it doesn’t contain any infectious organisms like white fungus.
  2. Rinse all objects and decorations thoroughly, both before and after getting rid of white fungus in your fish tank. Make sure that they are completely dry before using them again (and remember to wash hands after handling).
  3. Remember that pathogens like white fungus can survive for a long time without food or light, so if it seems like nothing is working, take a break from getting rid of white fungus in your fish tank and then try again later with a different approach.This way you don’t wear yourself out trying to get rid of white fungus by using methods that just won’t work. You might also want to consider contacting a professional at this point, since they have experience dealing with these things and will be able to help get rid of white fungus in your fish tank quickly and safely.
  4. When using a chemical cleaner, rinse everything thoroughly with water after you have gotten rid of white fungus in your fish tank. Remember that chemicals can be harmful to living creatures, so you want to make sure you follow safety instructions carefully. If in doubt, just use a non-chemical cleaner or natural product that is designed for cleaning and purifying water in fish tanks. This way you don’t harm your fish or introduce new pathogens into your tank through chemicals that will have no effect on white fungus anyway.
  5. If you’re treating your fish tank for white fungus, make sure that any chemicals are completely safe for your fish and won’t cause them harm. There are several natural ways to get rid of white fungus, and many commercial options as well, so it should be relatively easy to find a treatment option that works best for you and will also be safe for your fish.

Is white fungus dangerous?

Most white fungus is just a simple fungal infection. However, if left untreated, it can spread and cause more damage. This means you need to find out how to get rid of the white fungus as soon as possible.

Is white fungus poisonous for my fish?

While many aquarium owners make a huge deal about removing white fungus from their fish tanks, you shouldn’t stress too much. The chance that white fungus is harmful to your fish is small, but it’s not impossible. Depending on where your tank stands and what kind of filter it has, that white mold might just be harmless.

The only way it can negatively affect them is if they decide to eat it. If that happens, they might get an upset stomach or throw up their food, but that’s not nearly as bad as some other types of fish diseases. Besides, once you remove white fungus from your aquarium, most species won’t eat it again.


There are three main ways you can prevent white fungus from growing in your fish tank.

One, make sure that you keep your water quality at a high level.

Two, when feeding your fish make sure not to overfeed them. You should also remove any uneaten food from their bowl after 20 minutes.

Finally, do regular water changes to prevent an accumulation of nutrients which is essential for white fungus growth. Keeping these simple things in mind will help ensure that you don’t have any problems with white fungus in your fish tank in the future.