

🐠 Save your school with Fritz Maracyn — the pro’s choice for bacterial relief!
Fritz Maracyn is a specialized erythromycin-based antibiotic treatment designed to combat gram-positive bacterial infections in both saltwater and freshwater ornamental fish. Packaged in 20 easy-to-use dose packets, it effectively addresses symptoms like popeye, body fungus, and open lesions, ensuring rapid relief and healthier aquariums. Highly rated and trusted by professionals, it’s essential to have on hand for immediate treatment to prevent disease spread and protect your aquatic ecosystem.
| ASIN | B0D31Z3TQM |
| ASIN | B0D31Z3TQM |
| Best Sellers Rank | #10,452 in Pet Supplies ( See Top 100 in Pet Supplies ) #73 in Aquarium Water Treatments |
| Brand Name | Fritz Aquatics |
| Color | Fritz |
| Customer Reviews | 4.6 4.6 out of 5 stars (216) |
| Date First Available | April 30, 2024 |
| Date First Available | April 30, 2024 |
| Directions | Use when disease occurs |
| Included Components | Maracyn |
| Item Package Dimensions L x W x H | 5.67 x 3.82 x 1.3 inches |
| Item Weight | 20 Grams |
| Item model number | 46002 |
| Item model number | 46002 |
| Manufacturer | Fritz Aquatics |
| Manufacturer | Fritz Aquatics |
| Model Name | Maracyn |
| Number of Items | 1 |
| Package Dimensions | 5.67 x 3.82 x 1.3 inches; 0.71 ounces |
| Specific Uses for Product | Aquarium disease |
E**Y
Helped save most of our fish
Was very happy to get this,though we were disappointed that it took so long to get to us in Downeast Maine. We ended up losing a few fish before it arrived. Sometimes our shipments are delayed by a week or more,which normally wouldn't matter,but in this case it did. The product did however save our remaining fish and our snail Wendell didn't seem to suffer any ill affects from being in the tank with the treated fish. I would highly recommend ordering this before you have an actual problem so you have it on hand to start treatment immediately, unless you live in a more metropolitan area that gets deliveries within a day or two.
L**A
Best
Great value for money. This is one of my go-to medications for my tank. The fish seem healthy and the quality of the medication is sprayed. Color is consistent and as long as you don't eat it, it's safe.
J**R
Great for quarantine
Works great
S**D
Have to calculate dose for rat with abscess
Used for sick rat. She is improving.
S**A
Part of my meds trio quarantining fish.
I use this as part of the meds trio when I get my new fish and quarantine them for 4 weeks. Great product!
A**E
Works great and fast.
Good price and fast results. My fishes seem much happier and healthier.
R**M
Saved my fish
Sick fish and made them well. Lost a few that were too sick to save. Saved most of them. I also added salt, calcium, potassium, magnesium so electrolytes were up.
L**N
Effective, low cost, easy to use
After much research I discovered my Tetras had mouth rot. It is a bacterial infection. This product was recommended by the local pet store's Aquatic Specialist. I checked the reviews on Amazon as well. Maracyn received 4 and 5 star reviews. This product was much cheaper on Amazon compared to the local pet store. Maracyn treats a broad spectrum of gram positive infections. This product comes in pre measured packs. Each pack treats 10 gallons. No measuring and no mess. No worry about over or under dosing your fish. You have to remove all chemical filters before treatment. Maracyn will make your water cloudy. This product also strips your bio filter of good bacteria. You have to use an ammonia reducer (like Prime) because ammonia levels can spike during treatment. Keep an eye on your water. Test your water during treatment. I feel these are minimal side effects to ensure healthy fish. After day 3 the mouth rot was gone. I will complete the 5 day treatment plan as directed. Day 6 you do a 25% water change. Use all new filter media, including chemical media. I use Seachem Stability and Seachem Prime to cycle my aquarium faster, and establish my bio filter. I am very pleased with the results of Maracyn. It treats a broad range of gram positive bacterial infections. This product is easy to use. It is effective. By buying Maracyn on Amazon you will save money. I would highly recommend this product.
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