API Fungus Cure Anti-Fungal Freshwater Fish Medication, 10 count

  • List Price:


  • Price:

    $5.50 FREE 1-2 Day Shipping over $49

  • You Save:

    $3.99 (42%)

In stock
cw-icon-heart Created with Sketch. Add to Favorites

Quickly and effectively treat saprolegnia fungus infections and control contagions with API's Fungus Cure Anti-Fungal Fish Medication. Saprolegnia fungus infections, like eye fungus, mouth fungus, body slime and fin and tail rot are caused by dirty aquarium conditions and overstocked tanks with dead and decaying organic matter. Fish that are sick or injured and eggs are especially susceptible. These infections can cause liver, kidney and brain damage. In eggs, it can cause damage to internal organs and deeper tissue. Symptoms include cottony or white patches on fish. This medication contains hydrochloride to treat existing infections, control spread and help prevent growth on fish eggs prior to hatching in 48 hours. It can also be used to treat secondary bacterial infections. Simply remove the carbon or filter cartridge and add manufacturer's recommended amount directly to the water.

Key Benefits
  • Effectively treats saprolegnia fungus infections (eye fungus, mouth fungus, body slime, fin and tail rot) in 48 hours.
  • Helps to treat secondary bacterial infections.
  • Contains hydrochloride to treat existing infections, control further spreading of infections and can help prevent growth on fish eggs before they hatch.
  • Remove the carbon or filter cartridge and add manufacturer's recommended amount directly to the water.
  • For use in freshwater aquariums and comes with 10 powder packets.

HAZARDS TO HUMANS: For aquarium use only. Not for human consumption or for the treatment of fish intended for human consumption. Avoid contact with skin and eyes. May cause irritation.

California Residents: View Proposition 65 WARNING

See all items by API

  • Item Number
  • Aquarium Type



For best results, remove activated carbon or filter cartridge from filter and continue aerations. For each 10 gallons (38 L) of water, empty one packet directly into aquarium. Repeat dose after 48 hours. Wait another 48 hours then change 25% of the aquarium water and add fresh activated carbon or replace filter cartridge. Two doses required for full courses of treatment.


When should I use API FUNGUS CURE?

If your fish is exhibiting signs of a fungal infection, treat with API FUNGUS CURE. Symptoms of a fungal infection include body slime, fin & trail rot, and eye and mouth fungus (cottony or white patches on fish). Fish that are already sick or injured are highly susceptible to fungal infections in dirty aquariums. API FUNGUS CURE controls the spread of infection and works within 48 hours to clear up symptoms.

Should API FUNGUS CURE only be used to treat fungal infections?

API FUNGUS CURE works best when used to treat fungal infections, but can also be used to treat secondary bacterial infections. However, we recommend that you use API MELAFIX or API E.M. ERYTHROMYCIN to treat bacterial infections most effectively.

Do I need to remove my carbon or filter cartridge from the aquarium before dosing my tank with API FUNGUS CURE?

Products that are designed to remove things from your aquarium, such as filter media, will also remove dosed medication from your tank. For best results from medication, remove your filtration media as you dose.


Fish Care Made Easier

API is a name you can trust when it comes to taking care of fish. Not only are they passionate about fishkeeping, but they're dedicated to improving the hobby and making it easier to maintain the ideal aquatic environment. From helping the novice set up a new tank to providing state-of-the-art filters for advanced systems, you can rely on API's dedication to quality.

Fish Care Made Easier
Maintain the Perfect Setup

Maintain the Perfect Setup

Fishkeeping is a much easier task with API, because they've taken all the guesswork out of setting up a tank and maintaining it. Their proven treatments include water conditioners and clarifiers, fish medications, pH adjusters, algaecides and quick-start solutions—all designed to keep your aquarium crystal clear and your fish happy and healthy.

Testing Is Key

Once you've started a new aquarium, the only way to keep it in perfect balance is with routine water testing. API gives you all the tools you need to create a nurturing environment for both fish and live plants. Their comprehensive Master Test Kits are tailored to freshwater, saltwater or reef environments, and individual tests for things like pH, ammonia or nitrites leave nothing up to chance.

Testing Is Key
Clearing the Water

Clearing the Water

API offers reliable three-step filtration for tanks of all sizes with their FILSTAR XP Canister filters and wide variety of filter media. These powerful filters constantly circulate the water, trapping organic waste and odors, removing harmful ammonia and contaminants, and helping good bacteria to thrive in the tank.

Superior Nutrition

Feeding your aquarium inhabitants, whether they're tropical fish, turtles or newts, is something that can be tricky without the right food. API developed a special diet for every type of fish—one that's highly palatable, which leads to less waste in the tank. And that means less ammonia to cloud the water. For your turtle friends, premium floating pellets and stick treats provide multiple vitamins for a stronger, healthier shell.

Superior Nutrition
About API

About API

Through extensive and continuous research and development, API created quality products for all levels of fishkeeping. As people who are passionate about fish care, they understand the rewards of keeping up a successful aquarium or aquarium. With easy-to-read guides and premium treatments, foods, filters and testing equipment, API helps aquarists establish and maintain an environment where fish can flourish.

Shop API

Customer Reviews
2 Reviews 2 Reviews 2 out of 5 Stars

50% Recommend

50% of reviewersrecommend this product

2 / 5

You've Already Reviewed This Item

Showing 2 Reviews

  • works on the fungas.

    By on

    Plants have a difficult time when using this product, but it works great on fungal infections.

    You liked it! Something went wrong. Please try again later. Report
  • Didn't work after using twice!

    By on

    Used this product for both rounds and it didn't work, then I continued with two more rounds in conjunction with primafix, STILL didn't work. All we had was fungus and cloudeye on our large jack dempsey. So after 2 *complete* doses, lasting us 8 days of use to complete them all plus using primafix, nothing happened but a little reduction in the fungus.... the fish then got Ill frol.so much medication that we couldn't risk doing another dose and had to clear the tank. Fish is now fine but fungus and cloud eye persist. I give two stars because it did still reduce the fungus a tad.

    You liked it! Something went wrong. Please try again later. Report