API

API BETTAFIX Antibacterial Antifungal Betta Fish Infection and Fungus Remedy 1 7-Ounce Bottle

$4.58$6.48

621+ bought in the past month

About this item

  • Contains one (1) API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Remedy 1.7-Ounce Bottle
  • Heals bacterial infections, repairing damaged fins, ulcers, and open wounds and promotes regrowth of fins
  • Treats newly introduced fish to reduce risk of disease outbreak and heal wounds and tissue damage
  • Contains healing melaleuca, a variety of tea tree
  • Use daily for a week when treating infections and for three days as a preventive when adding new fish
$4.58
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Technical specifications
item_weight2.4 Ounces
manufacturerMars Fishcare
languageEnglish
item_model_number93B
date_first_availableJune 20, 2004
item_package_dimensions_l_x_w_x_h6.46 x 3.27 x 1.42 inches
item_dimensions_lxwxh3 x 3 x 8 inches
brand_nameAPI
target_audience_keyword( reptiles | amphibians ), fish
directionsUse whenever Bettas exhibit signs of bacterial disease, such as frayed or torn fins, red ulcers, or slimy patches. Add 9 drops per pint or 18 drops per quart of bowl or aquarium water. For larger bowls or aquariums, add ½ teaspoon per gallon of water. Repeat dose daily for up to 7 days, then perform a water change. Treatment may be repeated, if necessary. For tropical fish use, only.
country_of_originUnited States
model_nameBETTAFIX, 1.7 OZ
colorWhite
size1.7 Fl Oz (Pack of 1)
materialRubber
age_range_descriptionAdult
number_of_items1
styleAquarium Treatment
breed_recommendationAll Breed Sizes
is_discontinued_by_manufacturerNo
product_dimensions3 x 3 x 8 inches; 2.4 ounces
best_sellers_rank#3,774 in Pet Supplies ( See Top 100 in Pet Supplies ) #2 in Fish Medication & Health Supplies

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Customer reviews

4.37,588 ratings
  1. 563%
  2. 413%
  3. 313%
  4. 20%
  5. 113%

Customers say

Customers report that the remedy works wonders for their betta fish, helping with fin rot and other illnesses, with one customer noting it healed a tail injury within a week.

★★★★★

Works and is Inexpensive

Drew GriffithFebruary 10, 2026✓ Verified purchase

They should let people know, perhaps on the front label, that this is basically Tea Tree Oil. So it's mostly a natural medication. I used it on my Betta Fish, and it healed fish of minor fin rot. The instructions are very clear; but the water does get a bit murky and icky after 3 days of treatment (halfway through). I did several small water changes to stop the water from looking icky and murky during treatment due to my smaller 5 gallon tank. But I had to do a complete tank cleaning after the 7 day treatment - cause the water is so murky. But it works, and that is what counts! I would definitely recommend Read more

★★★★★

Works great

JessieJanuary 18, 2026✓ Verified purchase

Worked great. Saw an immediate change in my fish. He is up swimming and doing well. His color is much better. Whatever was bothering him is gone. I did a price comparison at a local pet store and this one was half the price. Read more

★★★★★

Happy with my order

Tracey M SpringMarch 5, 2026✓ Verified purchase

Happy with my order.. Got this for my betta and it works great, my fish is back to swimming around being his old self.. Well worth buying Read more

★★★★☆

Great

Bartholomew kellyNovember 24, 2025✓ Verified purchase

Worked for my betta he looks a lot better now. Read more

★★★★★

one of the best products

Sierra SageJanuary 23, 2026✓ Verified purchase

My beta was dying. Let's just get that out right now. He had fin rot. He was malnourished. His tank was the complete wrong ph and it seemed that everything i did was making it worse. So as a last-ditch effort, i got this. Poured some in his water filter every day. Withing in TWO DAYS, he was swimming, he was eating, the milky spots on his fins and scales was clearing up. His tanks algae finally started going away. I would absolutely recommend. And i have already purchased this a second time to keep on hand, just in case. It is small but it does have enough to do a whole week for a 10 gl tank. Read more

★★★☆☆

Didn’t help my fish

SaifMarch 2, 2026✓ Verified purchase

It didn’t help my betta recover. It died shortly after, not sure if it was due to using this product or just something else. This product overall had clear descriptions, decent size and no smell. Read more

★★★★★

Works!!!!

Tammy NorrisFebruary 28, 2026✓ Verified purchase

It works!!! My fish got bladder disease. This product 100% helped him in a few days he was as good as new!!! Read more

★☆☆☆☆

Purchase the aquarium salt instead for FISH ROT...

CustomerFebruary 11, 2026✓ Verified purchase

New Betta fish owner here who was frantically looking for a cure for FIN ROT. My betta was extremely lethargic, breathing heavily, and their fins were withering away. A clean tank of water wasn't going to do the trick at that point so I saw a few youtube videos about this item and impulsively purchased it. The minute I added the drops I noticed my betta fish reacting negatively to it. He was already at the bottom of the tank showing signs of distress but the drops amplified those symptoms. I made the mistake of not choosing to filter the reviews to 'NEWEST' and that's when I saw the 1 star reviews. I couldn't fathom leaving him in there to suffer more so I immediately cleaned out his tank and purchased the API AQUARIUM SALT Freshwater Aquarium Salt. This worked so much better and my betta fish is now back to his old self. His fins are also growing back beautifully. I normally don't leave reviews but I want to help other betta owners (especially us newbies) to stray away from this item and purchase the aquarium salt for fin rot. Hope this helps and wishing you the best of luck! Read more

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