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🐠 Keep your aquatic community thriving—because your fish deserve the best!
API PIMAFIX is a 16-ounce liquid antifungal remedy designed to rapidly treat fungal and bacterial infections in freshwater, saltwater, and reef aquariums. Featuring an all-natural extract from West Indian Bay trees, it safely heals delicate fish species without harming corals or beneficial aquarium life. Trusted by aquarists for nearly six decades, PIMAFIX ensures a healthy, vibrant underwater ecosystem with easy, daily dosing.



















| ASIN | B000256ESA |
| Allergen Information | Apple Free |
| Best Sellers Rank | #7,799 in Pet Supplies ( See Top 100 in Pet Supplies ) #52 in Aquarium Water Treatments |
| Brand | API |
| Brand Name | API |
| Customer Reviews | 4.5 out of 5 stars 8,244 Reviews |
| Global Trade Identification Number | 00317163100103 |
| Item Form | Liquid |
| Item Type Name | Aquarium Antifungal Remedy |
| Item Weight | 8 ounces |
| Liquid Volume | 16 fluid ounces |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 10J |
| Model Number | 10J |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 317163100103 |
| Unit Count | 1 Count |
A**R
works great
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
A**A
Great but has some issues!
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.
J**Z
Saved my Denison Barb - miraculous product.
This product worked miracles. I have a 140 gallon freshwater community tank that has 3 Denison barbs (aka roseline sharks) among current residents. I’ve had them for a few years and they have gotten quite large (~5”). Recently, out of nowhere, one of them developed white patches on their dorsal side that continued to grow. He began swimming very weirdly, almost standing vertically in one place the entire day. I had lost another one like this a few years back and the local fish store thought it was a bacterial infection and had me treat the tank with some white powdery stuff. It did not work and I lost that one. This patch on this little guy kept getting bigger until it looked like he had a cotton ball on his back, I was really despairing and thought I was going to lose him. Went online and found that the cottony growth was probably a fungal infection, which led me to this product. Raced out to the local store and bought the last bottle they had in stock. Put it in the tank the same day after removing the carbon from my sump. It was truly miraculous that after only 1-2 days of treatment, he started improving, The large external fungal growth began separating from his dorsal side and completely fell off in another day, exposing the damage the fungus had caused. He began swimming much more normally and rejoined his 2 schooling mates as they darted about the tank. Also noticed he began eating again. I continued dosing for a week and then did a 25% water change. He was still not fully healed, his external scales had not grown back, so I have continued dosing for another week and will do a second water change. He continues to heal and is almost back to normal appearance and behavior again. I am so thankful for this product and how well it has worked for my fish. Can’t recommend it highly enough and plan on keeping some in stock.
T**A
i guess it works
I have had limited success with this product. In more than 1/2 the cases the fish heal but maybe they would on their own? Not sure but I have a soft spot in my heart for struggling Bettas in pet stores. Those poor fish living in tiny cup all alone make me sad. So many die and are never homed. I built a large tank for Betta sorority and after quarantine add newbies to my tank. Females aren't as flamboyantly finned out as males so they don't get homes as often. I happen to love them, even the sickly runts I often buy get a fair to better chance at great life with my other gals :)
P**O
I did notice that he loved to puck on corners and squeeze behind the sponge ...
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.
P**Z
Great!
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.
C**L
For Certain Things This Is A Great First Defense (IN DEPTH REVIEW)
(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.
S**E
Works good to remove ick!
We had noticed a but of ick, fungus film like started appearing our tank and on a couple of the fish as well as our turtle, after reading a few different products we decided to try this one. It is working wonderfully. You could see the ick melting away from the turtle on day 1. We had turned off the filter when we put it in and let it sit for a bit, it made the water a little cloudy, but once we turned the filter back on that was all gone. I believe it was just this doing the job of cleansing the water that made it cloudy. Few days in and everything is gone and looking much better. Water is clear and all the fish/turtle are happy. Theres a very mild scent but it is not strong.
B**L
Good quality and price.
Good quality and price.
A**I
Great product
Ordered this 3 times. It saved my fish’s life. Very good and effective. Highly recommended
T**N
代わりに他の地元のブランドを使うべきです。
値段は他のものと比べて高いです。 その効果はそれほど大きくありません。
E**N
Effective treatment.
Worked well the fungus just fell off my 13yr old small pond goldfish, 2nd day she perked up but on the 4th and 5th day i lost her,she probably didnt have the stamina left to fight the infection if it was internal, totally gutted but my fault for not acting earlier, i feel the product is good and effective if used as soon as you notice an infection.
L**N
USATO IN POP EYES
Salvato mio pesce perfetto!
Trustpilot
2 days ago
4 days ago