• Renders deadly ulcer causing Aeromonas, Pseudomonas harmless to your fish
  • Treats pond water as low as 40 degrees (F) 
  • Great for early spring & late fall treatments
  • Can be stored at room temperature for 3 years or more
  • DOES NOT contain chemicals, antibiotics or medications
  • Safe for filters, plants, pets and wildlife   
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    Aqua Medzyme DC 1lb Treats 125,000 Gallons


The formula used to produce Aqua MedZyme® Dry has been tested extensively in Koi Ponds, Commercial Aquaculture Applications, Private Veterinary laboratories and University Studies.  No other probiotic formula has undergone such extensive testing and review in commercial aquatic conditions against a variety of pathogenic organisms.

Aqua MedZyme’s™ formula has been tested against the following gram negative pathogenic microbes that can cause severe mortalities is many fish species:  Aeromonis, Psuedomonas, Vibrio, Streptococcus, Allococcus, ESC (Eduarselli icturis) and Columnaris.  Aqua MedZyme probiotic has been found effective against these gram negative pathogens in the aquatic environment of Water Garden Ponds, Koi Ponds as well as many commercial fish farm applications.  No other probiotic formula has undergone such extensive testing under severe conditions.  Aqua MedZyme has been tested in water borne applications for Koi, Goldfish and other fish species and is the only probiotic to undergo major testing in real world commercial farms.

Aqua MedZyme will not harm beneficial microbes and is used in conjunction with beneficial microbial products. It will not harm biofilter microbes such as Nitrosomonas and Nitrobacters, but in fact will enhance nitrification through competitive exclusion of heterotrophic microbes that tend to block efficient nitrification.
New studies have indicated the Aqua MedZyme treatments given on a continuous treatment for 7 days may cause inborn immunity in certain species of fingerling fish so that fish remain resistant to infection once re-exposed. Continuing university studies are looking into this mechanism and the potential for an aqueous vaccine using the Aqua MedZyme formula. This formula represents a major breakthrough in Probiotic treatment and the potential to help all fish keeping operations without the use of antibiotics.

When you look for quality probiotic product you want to rely on a product like Aqua MedZyme, that has been extensively tested in commercial applications world wide and one strong enough to do the job right. There is no other formula like Aqua MedZyme for the Water Garden, Koi and Goldfish Pond. The Quality is in the science.
Available Size:

1 lb. - Treats 125,000 Gallons


  • Turn off UV sterilizer during the first 3 treatments.  
  • Mix Aqua MedZyme (measuring scoop enclosed) with 2-3 gallons of pond water, stir vigorously, let stand for 10 minutes, then re-stir and distribute around pond.

100 to 2,500 Gallons:

  • 1 Tbsp. (scoop) every 3 days for 3 treatments
  • Then 1 Tbsp. each week for 2 weeks
  • Maintenance Dosage - 1/2 Tbsp. every 2 weeks

2,500 to 5,000 Gallons:

  • 1 Tbsp. (scoop) every 3 days for 3 treatments
  • Then 1 Tbsp. each week for 2 weeks
  • Maintenance Dosage - 1 Tbsp. every 2 weeks

For Sick Fish:

  • Double the Maintenance Dosage

Dosage By Water Temperature:

  • 40-49 degrees - Triple Normal Dosage
  • 50-62 degrees - Double Normal Dosage
  • 63-68 degrees - 1.5 x Normal Dosage
  • 69 degrees and above - Normal Dosage