How To Treat Discus Worm Types? Discus Deworming Methods


Treating Discus worms (Discus de-worming) like tapeworms or cestodes, flukes or trematodes can be done using wormer plus, metronidazole, praziquantel, API General Cure, and salt dips (Epsom salt).

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Discus Worms

Discus worms or helminths are parasites that latch onto Discus and stay in any of its internal organs such as gills, and they reproduce and feed on it eventually causing diseases and then finally death. Examples are tapeworms or cestodes, flukes or trematodes.

How Many Types Of Discus Worms?

There are four major types of Discus worms. They include:

  1. Tapeworms or cestodes.
  2. Flukes or trematodes.
  3. Roundworms or Nematodes.
  4. Anchor worms.

Discus Worms Symptoms

Discus affected with parasites like tapeworms or roundworms exhibit the following symptoms:

Discus Worms Disease Description And Causes

Parasites can always be found on Discus, they practically depend on the nutritious components of the fish to survive, and although parasites are dangerous, Discus can survive and be healthy irrespective of their presence. However, when Discus is exposed to stress in any form, these parasites tend to take advantage of the weak immune system and feed on Discus, causing more damage and injury to the fish.

NOTE: When these injuries are not treated in time, Discus could be exposed to even further diseases that would affect its functionality and ultimately lead to death.

How Long Is The Life Cycle Of Discus Worms?

The life cycle of parasites like worms is anytime between 2 hours and 3 days.

Are Discus Worms Contagious?

It is very easy to transmit worms from one fish to another in the tank, be that as it may, infestation by parasites like cannot be considered as being totally contagious because although one or more fishes in a tank can be affected by parasites, there could be others who aren’t and are very healthy.

How Do Discus Fish Get Infected With Worms?

Some of the most common worms that are capable of infesting your Discus are tapeworms, also known as cestodes, trematode worms or flukes, and nematode worms which are also called roundworms. Each of these worms can be introduced into the tank through a myriad of ways such as plants, objects and even fish.

When a plant you want to put into your aquarium or tank is already infested by worms, adding that plant into the tank makes your Discus and other breeds in your tank vulnerable to an attack and the same go for objects and fishes too.

NOTE: Also, when you keep giving your Discus and other fishes in your tank, live foods to eat or even frozen blood worms, you are increasing the risk of them being exposed to internal parasite infestations by either worms or protozoa.

Anchor worms are another kind of worms that you should watch out for, and although they are very rare, they can also cause damage to your Discus. One thing you might notice is that your Discus has long, dark brown extensions that look like threads dangling from its body.

List of all possible causes

Discus is infested by worms because of the following:

  • New plants carrying worms are introduced into the aquarium or tank.
  • New objects introduced into the tank are already infested by worms.
  • New fishes that have already been infested by worms are introduced into the tank.
  • The poor condition of water in the tank.
  • Fighting and nipping among fishes in the tank.
  • Improper diet.
  • Disease infection weakens the immune system.
  • Irregular or fluctuating temperature of the water in the tank.
  • Disease infection.

6 Methods To Treat Discus Worms

When you notice any of the Discus worm symptoms, you should take the necessary steps to alleviate the problem and administer the Discus white poop treatment.

[METHOD1] – Using Wormer Plus


Wormer plus is very effective for eliminating any internal parasites (helminths) that infest your Discus and the dosage needed is dependent on the degree of infestation.

When you notice your Discus appears black, looks skinny or Discus has a thick white poop, you need to give them wormer plus as frequently as possible.

You don’t have to wait for your Discus to demonstrate any of the Discus worm symptoms before you use wormer plus on them, it is recommended to administer the medication at least once every month to make sure you keep your Discus in perfect health condition.

NOTE: You may also provide a favourable condition for when you want to introduce new fishes into the tank by using Warmer plus prior to adding the new fish in a temp tank.

[STEP1] – Remove The Filter Carbon

It is highly recommended that you should get rid of any carbon in the tank so that the treatment will be very effective.

[STEP2] – Prepare The Proper Warmer Dosage

Each pack of wormer plus contains a 30 UK gallon measuring scoop so that you can administer treatment to your Discus without any difficulty and you will find instructions on the proper dosage to use.

[STEP3] – Prepare The Warmer In A Container

Mix wormer plus in a container (the container should be food grade) filled halfway with tank water and tighten the lid of the container after which you shake the container thoroughly to mix the medication.

NOTE: You can mix wormer plus with other kinds of medicines that you want to apply to your tank, it is totally safe for plants (that is, if you have plants in your tank) and it has no negative effect on the biological filtration.

[STEP4] – Apply The Warmer To The Tank

After you have done that, add the medication to the tank for about a minute – there’s no need to worry about the pH level of the tank water after you have put in the medication, wormer plus does not increase the water pH level.

NOTE: When applying this treatment, you don’t have to turn off the ultraviolet sterilization.

The major and active component of wormer plus is Flubendazole which starves the worms slowly and therefore it is good for frequent usage.

[STEP5] – Blend Calcium Carbonate

It is also recommended to blend in calcium carbonate which gently restores and boosts the performance of Discus after the worms are rid of.

NOTE: A small amount of Natural Calcium Carbonate (0.01g) brings some kind of balance such that using the wormer plus does not affect the water pH level.

[METHOD2] – Using Metronidazole (Flagyl)


This is another effective medication for Discus that is under attack from internal worms. This is effective, especially if the worms are cestodes (tapeworms) or trematodes (flukes).

NOTE: Metronidazole is very effective for internal parasites as well like Hexamita.

You better check my other deep detailed article on how to use properly Metronidazole and eSha Hexamita to cure internal parasites @ Discus Hexamita Disease – Metronidazole Complete Cure Guide.

[METHOD3] – Using Praziquantel


Praziquantel is especially effective when dealing with nematodes or roundworms.

[METHOD4] – Using API General Cure

Api general cure powder

This is good medicine that has a blend of both Metronidazole and Praziquantel so instead of purchasing Metronidazole and Praziquantel independently; you could just go for API General Cure and check its affordable price from Amazon.

[METHOD5] – Using Use Epsom Salt

Dip Discus in water after adding Epsom salt to the water.

NOTE: You could also add Epsom salt to your treatment tank along with any of the above medication methods to expedite the treatment.

[METHOD6] – Using Potassium Permanganate

Put potassium permanganate in water and dip Discus in it.

NOTE: You could also add potassium permanganate to the same tank along with any of the above medication methods to expedite the treatment.

Discus Worms Future Prevention Tips

  • Clean your tank and change 25-30% of the water weekly.
  • Avoid feeding your fish live foods, and even if you must, be sure that they are free of worms, especially nematodes.
  • Avoid feeding your fish frozen worms.
  • Avoid overcrowding your tank. If there are parasites already living in the internal organs of Discus, they might not cause any harm until Discus is stressed and an overcrowded tank can bring about fighting and nipping which could make Discus uncomfortable.
  • Feed your Discus with the proper diet. Too much food does not mean good food, consult a vet or do your own personal research to find out the proper food to feed your Discus and in what quantity.
  • Be sure that the water in the tank is in good condition. Check the ammonia, nitrite and pH levels regularly.
  • Avoid any fluctuations in the tank water temperature.
  • Avoid any cause of stress to your Discus.

How Do You Tell If Your Discus Fish Have Worms?

If your Discus has worms, they begin to exhibit certain signs (Discus worms symptoms) that you need to look out for such as:

  • Discus refuses to feed (loss of appetite).
  • White stringy faeces (Discus thick white poop).
  • Although they are eating, Discus is getting skinny.
  • The skin of Discus begins to get darker and then turns black.

How Do You Treat Discus With Internal Parasites?

You can treat internal parasite with:

  • Metronidazole.
  • Wormer plus.
  • Praziquantel.
  • Epsom salts.
  • API General Cure.

How Do You Treat Fish Worms? How Do You Deworm Discus?

You can deworm your Discus by using antiparasitic worming medication such as API General Cure, wormer plus, metronidazole, and praziquantel. Just make sure to follow the instructions that come with the medication and if you can’t administer treatment confidently, consider consulting your vet.


Discus worms are worms that infest on Discus and feed on its nutrients because fishes are nutrient-rich. These worms include tapeworms, roundworms and flukes, which reproduce constantly feed on the internal organs of Discus.

Discus can be treated with worming medications such as wormer plus, Metronidazole, Praziquantel, API General Cure, etc. To prevent Discus from worm infestation clean your tank, avoid overcrowded tank, avoid temperature fluctuations in the tank water, feed your Discus with a proper food diet.


This is me Firas Sameer, the founder of, I am an aquarist guy with a passion and love for Discus fishes, I am learning every day with my hobby at home and sharing the things I am learning from my experience with you.

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