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API

API PIMAFIX Antifungal Freshwater and Saltwater Fish Remedy 16-Ounce Bottle

  • Based on 8,280 reviews
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Size: 16-Ounce


Features

  • Contains one (1) API PIMAFIX Antifungal Freshwater and Saltwater Fish Remedy 16-Ounce Bottle
  • Rapidly and safely treats fungal infections on body and fins of fish
  • Contains all-natural extract from West Indian Bay Trees to help with fungus and cottony growth
  • Helps heal internal and external bacterial infections in freshwater, saltwater and reef aquariums
  • Use daily for a week when treating infections

Description

API PIMAFIX Antifungal Freshwater and Saltwater Fish Remedy treats fungal and bacterial infections in all fish, including even the most delicate fish species such as tetras, discus fry, and scaleless fish like clown loaches. API PIMAFIX Antifungal Treatment alleviates symptoms such as fungus or cottony growth on fins, mouth and body fungus, and reddening of fins and body. API PIMAFIX Antifungal Treatment is safe for use in reef aquariums and will not harm the biological filter or invertebrates, such as live corals and anemones. Use dosing cap on bottle to treat effectively, using 5 ml per 10 US gallons of aquarium water. Follow directions on product label. To treat a broader range of infections, use with API MELAFIX Antibacterial Fish Treatment. API PIMAFIX Antifungal Treatment can be used with all API products, including medications and water conditioners. With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

Brand: API


Liquid Volume: 16 fluid ounces


Item Weight: 8 ounces


Item Form: Liquid


Number of Packs: 1


Product Dimensions ‏ : ‎ 2.76 x 2.76 x 8.66 inches; 8 ounces


Item model number ‏ : ‎ 10J


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ June 15, 2004


Manufacturer ‏ : ‎ Mars Fishcare


Best Sellers Rank: #8,120 in Pet Supplies (See Top 100 in Pet Supplies) #45 in Aquarium Water Treatments


#45 in Aquarium Water Treatments:


Customer Reviews: 4.5 4.5 out of 5 stars (8,280)


Brand Name: API


Number of Packs: 1


Unit Count: 1 Count


Manufacturer: Mars Fishcare


UPC: 317163100103


Number of Items: 1


Global Trade Identification Number: 03


Item Type Name: Aquarium Antifungal Remedy


Model Number: 10J


Manufacturer Part Number: 10J


Liquid Volume: 16 fluid ounces


Item Weight: 8 ounces


Item Form: Liquid


Pet Type: Fish


Target Species: Fish


Allergen Information: Apple Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 11

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View our full returns policy here.

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Top Amazon Reviews

    • Great!
Size: 16-Ounce
PIMAFIX is easy to use and convenient for treating fungal problems in my aquarium. The bottle comes with clear instructions, and the 16 oz size gives you plenty of product for multiple treatments. It’s a useful product to keep on hand for aquarium maintenance.
Reviewed in the United States on August 30, 2026 by Pablo González
    • works great
Size: 16-Ounce
I can't say enough about this product. I bought some fish with problems; they all died. I was able to save the fish I had left and defungate the tank before the fish I had bought earlier came . A real lifesaver
Reviewed in the United States on August 16, 2026 by Amazon Customer
    • Great but has some issues!
Size: 16-Ounce
This did cure my betta from his fin riot, but i do have some issues that I ran into when I was treating my betta with this remedy. Fist, my mystery Snails got sick. One of them started to float around on the top of my tank which he never done before, and my seconded snail stopped moving for 8 hours. Once I removed them from my tank into a little setup for them, they started to move around quickly, and they were fine. Secondly, some of my plants got brown/black spots all over them and they started to drop most of their leaves (I wasn't to concerned about this). My last issue is that my tank got extremely dirty, which I did clean my tank right before I added the PIMAFIX. I recommend that you make a little setup separate from your original tank if you have more than one fish, or you have little friends in the tank. ... show more
Reviewed in the United States on September 15, 2022 by Allena
    • Works
Size: 16-Ounce
Bottle arrived without the cap and the protective seal broken, meaning that it leaked all over the box and everything else in it. Amazon replaced it for free and the replacement arrived with a cap and fully sealed. On to the product itself... I bought some fish recently and one of them had severe ick and a fungal infection that ate a big hole on the fish's side. Noticed the ick before the fungus so treated that with API Super Ick Cure which got rid of most of the ick but not all of it. Got this Pimafix and Melafix to treat the fungal infection and help heal the wound. Treated with both once a day for 7 days then did a 25% water change. The fungal infection is mostly gone and the wound is almost completely healed. The 2 ick spots that were left are almost gone too. Also, another fish had a tear in her top fin which healed practically overnight since she was in the tank being treated (left all the fish in to kill off anything I couldn't see just in case). The water is still very cloudy even after the water change and replacing the filter. Overall the product worked better than I expected (when used at the same time as Melafix, not sure how it would've worked if used alone). The only reason I took off a star is because of the horrendous state in which I received the first bottle. ... show more
Reviewed in the United States on September 1, 2017 by Rachel
    • For Certain Things This Is A Great First Defense (IN DEPTH REVIEW)
Size: 16-Ounce
(WARNING- This is an in depth review of this aquarium product. This review is to help those seriously interested in purchase make an informed buying decision. For a brief summary, see section marked THE BOTTOM LINE) ------------------- I have been keeping fish for quite a few years now. I have a variety of tanks and fish. When it comes to a first defense, I want something natural and that is not going to strip my tank filters of beneficial bacteria. Let's see how Pimafix measures up. WHAT IS PIMAFIX LIKE? Pimafix is a natural extract of a plant in the myrtle family also known as West Indian Bay tree. It is a weak extract which helps nudge the water into a more healthy environment for the fish in certain instances. This comes in a bottle with a measuring cap on top. You use 5ml for every 10 gallons of water, and use daily for seven days, followed by at least 25% water change. The smell is a bit herby and the appearance is clear. WHAT DOES THIS TREAT? This is used primarily for fungal conditions such as fungus growths, mouth and body fungus, and even reddening of the fins and body- but not the kind that is sores- that is better addressed by APIs other product called Melafix which is derived from tea tree. HOW DOES THIS PERFORM? This performs well when used for cottony looking fungal growth. I had a fish with a small patch of cottony growth on a top fin. After a week of use of Pimafix, the growth has gone down by half and none of the other fish have shown signs of it. DOES THIS AFFECT THE FILTER? This does not throw off the biological filter of the tank if used as recommended with water changes every 5 to 7 days. ANY UNUSUAL THINGS? This does create a tremendous foam in a tank so don't panic if that happens to you. It is normal and will go away eventually. SENSITIVITIES I HIGHLY recommend that when you start using Pimafix that you use a smaller dose at first to test for any fish sensitivities. I have used this in all of my freshwater tanks, usually with no problem, including snails and shrimp. HOWEVER, I have had occasional fish which have personal allergic reactions or difficulties with Pimafix or Melafix. It is important that you either remove the sick fish into a hospital tank that you can isolate treatment and observation or at least start with smaller doses to test and see if any fish are allergic. THE BOTTOM LINE For fungal conditions, if you use Pimafix as a first defense, it will help reduce and often reverse cottony looking fungal conditions and general body or fin reddening. For more serious conditions, something a bit more intense might be required. MY RATING I really love Pimafix. It works well if you catch things early in your tanks, and often can go hand in hand with Melafix, depending on your fish. ... show more
Reviewed in the United States on October 3, 2018 by Colorgirl
    • I did notice that he loved to puck on corners and squeeze behind the sponge ...
Size: 16-Ounce
This product really worked as described! I am a newbie fish owner, so I have very little experience taking care of my goldfish. However, I noticed that he had some scales fallen out after having him for less than 1 month. I didn't know how he had a few of his scales fallen out since he was in a 30 gallon tank. I have few ornaments in the tank, and there weren't any sharp objects as well. I did notice that he loved to puck on corners and squeeze behind the sponge a lot, so I assumed it may have been from that. So, I went online and started reading up on how to take care of my goldfish and how to help him grow back his scales or prevent more from falling. At this time, I also wasn't sure if he had other diseases as well since this was my first time taking care of a fish. So, I saw and read several reviews on this product using it with the API Melafix where previous customers and experienced fish owners wrote about it helping their fish, as well as, preventing diseases and other ailments. I thought I gave this item a try. It was one of the best products I've bought for my fish. It really helped him healed his scales. I noticed the area where his scales were missing darkened and turned fleshy again. In about 1 week or so, I noticed the area started growing scales already. I am very happy with this item. However, this product is very strong. I have a small, young goldfish in a 30 gallon freshwater tank, with a 50 gallon Aquaclear water filter system, and following the dosages for this product for a 30 gallon tank, I noticed my goldfish acted very agitated to this product. His eyes also started bulging out more. After observing this, I did 25% water change and used half the given dosage. I think this amount was more tolerable to my baby goldfish. I also noticed that my fish scales and fins became silkier after a week of usage. I'm really happy I tried this product out. I would recommend a lower dosage if you have smaller fish. I also recommend to do at least 2 days 25% water change every time you use the product. ... show more
Reviewed in the United States on October 21, 2017 by Pao
    • As described
Size: 16-Ounce
I love this stuff for my fish tank. Especially the first cleaning after adding a new fish.
Reviewed in the United States on July 22, 2026 by Meghan K.
    • Not all that great
Size: 16-Ounce
Ick just won’t go away. One 2nd time in a row trying to help fish. Gave up after 3 days into 2nd try. One fish seemed to be storing in this stinky stuff. Chemical one worked better.
Reviewed in the United States on February 18, 2026 by barbicute

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