SKU: 11806356729

Fritz Maracyn

Sale price$21.60 Regular price$24.00
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Ships within 48 hours · Estimated delivery Sep 18 - Sep 23

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Description

Fritz MaracynTreats bacterial infections Safe for aquarium plants Safe for shrimp, snails, and other invertebrates Fritz Maracyn is a specially compounded broad spectrum antibiotic (erythromycin) which has been shown to be effective against a number of pathogenic bacteria associated with ornamental fish disease. It was developed for complete but gradual dissolution in water. It is primarily effective against gram positive pathogenic organisms. Symptoms of clamped

  • Treats bacterial infections
  • Safe for aquarium plants
  • Safe for shrimp, snails, and other invertebrates

Fritz Maracyn® is a specially compounded broad-spectrum antibiotic (erythromycin) which has been shown to be effective against a number of pathogenic bacteria associated with ornamental fish disease. It was developed for complete but gradual dissolution in water. It is primarily effective against gram-positive pathogenic organisms. Symptoms of clamped fins, swollen eyes, heavy or rapid breathing, patchy coloration, change in swimming behavior or corner-hiding can be signs of possible bacterial infection.

For the 10-count and 20-count boxes of Maracyn, the medication comes in individual packets where each packet treats 10 gallons of water. The 100-gram bulk container treats a total of 1,000 gallons of water while the 400-gram bulk container treats 4,700 gallons of water, and both containers come with a scoop for easy dosing. When treating with Maracyn, we recommend using an air stone in the aquarium, which may temporarily cause excessive foaming at the water surface.

Directions/Specifications

For best results, we recommend removing chemical filtration from your aquarium filter before dosing the medication. Examples of chemical filtration include activated carbon, carbon-infused media pads, Seachem Purigen, phosphate media pads, and ammonia media pads.

Manufacturer's Directions on the Package:
One complete course of treatment will take 5 days. Treat for the full course of treatment even if visible signs of infection or illness disappear.
— Day One through Day Five: Each day, add contents of one packet per 10 gallons of water to be treated. For the bulk jar, add 1 level scoop (approximately 1 gram) per 10 gallons of water each day.
— Day Six: Perform a 25% water change. If necessary, a second full course of treatment may be performed starting on Day Seven.

Aquarium Co-Op Instructions:
Dose one packet (or 1 level scoop from the bulk jar) per 10 gallons of water to be treated. Let sit in aquarium for 7 days. Then do 25% water change.

Notes:
— All suspected bacterial infections should be treated immediately.
— Fritz Maracyn® is non-toxic to invertebrates such as snails and shrimp.
— Don't confuse this medication with Maracyn 2, which is not the same medication.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 11806356729

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Craig E
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★★★★★ 3
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Reviewed in the United States on November 4, 2025
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Coofandy for the win.
Excellent pullover quilted sweater. Very soft, comfortable, and affordable.
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Reviewed in the United States on February 8, 2026
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Rocky Fawcett
Birmingham, US
★★★★★ 5
Great Product
Color: All Khaki, Size: Large
Great pullover - good quality and warm on cool days
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Reviewed in the United States on February 8, 2026
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andrew
Carnegie, US
★★★★★ 5
Great value watch with all the basic functions.
This is a solid watch for the money. I think if you are looking for a training watch that doesn't break the bank, this is a good option. I looked at a ton of options, and I know there are some even cheaper entry level options, but this Ironman was a little bit of a step up in appearance and quality. To me it's worth it to get this over something in that $20 to $30 range. The Ironman was more stylish and less bulky than a lot of those options. This watch has a nice sized face that makes it easy to see without being so large that it's too much. There are some of these entry level sports/military watches that are just enormous. I'm not a huge guy so this was a much better option. One thing I am really liking is how flexible the strap is. The material has a nice give to it making it a very comfortable watch to wear. I've had some watches in the past where the bands were just too stiff and made the watch very uncomfortable. It's easy to understand and operate. I didn't even read the manual and had everything figured out after 5 or so minutes. Unless you are really going to step up and get a GPS smart watch in the $200 and up range, this watch is a great option.
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Reviewed in the United States on September 15, 2018
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FJ
Omaha, US
★★★★★ 5
Great watch for healthcare workers
This is a great watch that I use for my nursing clinical rotations at hospitals. It has been washed and disinfected many times and it still looks new. I can read the time without my glasses I wear for astigmatism. The light is good for nighttime or darkened rooms. I think the alarm and hourly chime are harsh sounding, but they serve their purpose if needed (The beep of a Casio digital watch is preferred, for a frame of reference).
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Reviewed in the United States on February 5, 2026

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