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Krazykoimeds

  • Products
    • Koi Meds
    • Koi Juices
    • Medicated feed
  • Koi Health 101
  • Koi Varieties
    • Gosanke Varieties
    • Usturimono
    • Asagi
    • Shusui
    • Hikarimuji
    • Koromo
    • Hikari Moyomono
    • Goshiki
    • Bekko
  • Emergency Consultation (Virtual)
  • Contact
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With over 30 years as a commercial aquaculturist, I’ve tested numerous products and blends to treat fish ailments. My new product line draws on decades of trial and error, featuring proven formulas that have consistently delivered fast healing and recovery for koi, goldfish, and various aquarium fish.

Crafted by a Koi farmer for Koi enthusiasts


  • All Natural Barley Extract All Natural Barley Extract

    All Natural Barley Extract

    All Natural Barley Extract

    Regular price From $29.99 USD
    Regular price Sale price From $29.99 USD
    Unit price /  per 
  • Anchor Armor

    Anchor Armor

    Anchor Armor

    Regular price From $36.99 USD
    Regular price Sale price From $36.99 USD
    Unit price /  per 
  • Bacterial Blast Bacterial Blast

    Bacterial Blast

    Bacterial Blast

    4.88 / 5.0

    (8) 8 total reviews

    Regular price From $54.99 USD
    Regular price Sale price From $54.99 USD
    Unit price /  per 
  • Bacterial Blitz Bacterial Blitz

    Bacterial Blitz

    Sold out

    Bacterial Blitz

    5.0 / 5.0

    (2) 2 total reviews

    Regular price From $54.99 USD
    Regular price Sale price From $54.99 USD
    Unit price /  per 
    Sold out
  • Critter Quitter

    Critter Quitter

    Critter Quitter

    Regular price From $19.99 USD
    Regular price Sale price From $19.99 USD
    Unit price /  per 
  • Emergency Medicine Kit

    Emergency Medicine Kit

    Emergency Medicine Kit

    5.0 / 5.0

    (4) 4 total reviews

    Regular price $224.99 USD
    Regular price Sale price $224.99 USD
    Unit price /  per 
  • Koi Shield Koi Shield

    Koi Shield

    Koi Shield

    Regular price From $49.99 USD
    Regular price Sale price From $49.99 USD
    Unit price /  per 
  • Nighty Night

    Nighty Night

    Nighty Night

    Regular price From $16.99 USD
    Regular price Sale price From $16.99 USD
    Unit price /  per 
View all

Let customers speak for us

from 26 reviews
Simply the best place to get help for your koi

To start with the order was going to be delayed by the shipping company and they took the time to cancelled my order and resend it over night So I got it on time. I got the medicine needed for my koi and any questions had where answered. They went out of there way to make sure my koi where safe. They are the Only place I will turn to for help. Robert Haas

Robert
09/14/2025
Emergency Medicine Kit
Emergency Medicine Kit
Great!

I bought this for my pond. One of my goldfish got an ulcer on its side and this cured my fish! I put the fish in a hospital tank with this medicine as instructed. Now it is back in the pond and doing great!

Anonymous
09/10/2025
Bacterial Blast
Bacterial Blast
It works!

Bacteria Blast made quick work of a columnaris (mouth rot) issue. It took only ten days from hospital tank to back in the pond and doing well.

Mike
09/09/2025
Bacterial Blast
Bacterial Blast

Outstanding customer service with quality products

Kari
09/09/2025
Bacterial Blitz
Bacterial Blitz
2nd purchase

This is my second purchase from Jason and his KrazyKoi meds line. Both times I experienced excellent customer service and follow up care. No company is as attentive and responsive as Jason when it comes to helping purchase, use meds, and care for your fish. I will continue to purchase from this company because of price, availability of medications, and aftercare provided.

J.S.
09/09/2025
Krazykoimeds
I used the Purple Magic for the first time and used it for prevention

I used the Purple Magic for the first time and used it for prevention. So far so good!

I appreciate you and trust your knowledge and expertise. Thanks

Terry
08/27/2025
Purple Magic
Purple Magic
Love the packaging and bucket!!!! All looks amazing

Love the packaging and bucket!!!! All looks amazing. Have not used any of it yet.

Monica
08/24/2025
Emergency Medicine Kit
Emergency Medicine Kit
It works

Treated a goldfish for columnaris (mouth) in a hospital tank after a stressful spawn. She started eating again a week after treatment and then back in the pond.

Mike
08/11/2025
Bacterial Blast
Bacterial Blast
Easy to follow instructions

Easy to follow instructions, just started using it but is a brand from a trusted source, so I have full confidence in the results.

Anonymous
08/11/2025
Purple Magic
Purple Magic
Great! Product

Great! Product. Product really works and easy to use.

Barry
07/30/2025
Purple Magic
Purple Magic

All of Krazykoimeds are about standard they are tried and tested!

Bryan
07/28/2025
Bacterial Blast
Bacterial Blast
QP gave be the courage to buy 2 goldfish from the Sick Tank at Petco!

Quarantine P gave me the courage to buy two Ryunkin goldfish from a Sick Tank at Petco! I had no idea what thesick appearing fish in the tank had… parasites, bacteria, etc… but I figured if I use QP it would erradicate the issues. And it did. I detected parasites and Ich… that I could SEE. Instead of using three different products, onefungal, parasites and bacteria… and product poison overload. QP accomplished the clean-out process without the stress of not knowing if they would have survived three products, slapped together. So to speak. I like that KK meds have done the fail and learn time-tested method, essentially an actual longitudinal clinical trial. And the sourcing of the medications is vital, which I can tell is well sources thus far, as their products have solved the problems and kept the fish alive! I no longer fear medicating goldfish/koi with heavy meds , as opposed to methyl Blue and salt dips, since I had success with KK meds. As stated before… I rarely write reviews. Just leave 1-5 stars. But I want to help others and of course, fish. Stay away from these mass produced big fish company medication products. Don’t do it.

Alexis
07/23/2025
Quarantine Pro
Quarantine Pro
All I know is that my injured fish recovered and

All I know is that my injured fish recovered and seems to be doing great! Jason gave me instructions and was great through the whole nerve-wracking issue! THANKS SO MUCH!

david
07/22/2025
Bacterial Blast
Bacterial Blast
Fantastic!! product

Fantastic!! product. works great, great price, easy to use and fast shipping. Can't say enough good things about this product. Highly recommend.

Barry
07/22/2025
Emergency Medicine Kit
Emergency Medicine Kit
Excellent

Excellent. Where all big label antibtoics and bacterial infection agents fail...Blitz and KK products do not. I think the sourcing of the indegrediants and the right, amounts, and combos, make this product produce results! Every other time I have tried anti-bacterial big co. label products my fish have either not gotten better or died from product posonioning. These products I've found to be safe and effective. I rarely write reviews.

Alexis
07/20/2025
Bacterial Blitz
Bacterial Blitz

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★ Reviews

Let customers speak for us

26 reviews
Write a review
96%
(25)
4%
(1)
0%
(0)
0%
(0)
0%
(0)
25
11
R
Emergency Medicine Kit
Robert
Simply the best place to get help for your koi

To start with the order was going to be delayed by the shipping company and they took the time to cancelled my order and resend it over night So I got it on time. I got the medicine needed for my koi and any questions had where answered. They went out of there way to make sure my koi where safe. They are the Only place I will turn to for help. Robert Haas

User picture User picture User picture
A
Bacterial Blast
Anonymous
Great!

I bought this for my pond. One of my goldfish got an ulcer on its side and this cured my fish! I put the fish in a hospital tank with this medicine as instructed. Now it is back in the pond and doing great!

User picture
M
Bacterial Blast
Mike
It works!

Bacteria Blast made quick work of a columnaris (mouth rot) issue. It took only ten days from hospital tank to back in the pond and doing well.

K
Bacterial Blitz
Kari

Outstanding customer service with quality products

T
Purple Magic
Terry
I used the Purple Magic for the first time and used it for prevention

I used the Purple Magic for the first time and used it for prevention. So far so good!

I appreciate you and trust your knowledge and expertise. Thanks

User picture
123