• New tank stabilization system for marine and freshwater
  • Rapidly and safely establishes bio-filter
  • Prevents "New Tank Syndrome"


Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: "new tank syndrome". Stability® is formulated specifically for the aquarium and contains a synergistic blend of aerobic, anaerobic, and facultative bacteria which facilitate the breakdown of waste organics, ammonia, nitrite, and nitrate. The bacteria employed by Stability® are non-sulfur fixing and will not produce toxic hydrogen sulfide. Stability® is completely harmless to all aquatic organisms as well as aquatic plants, thus there is no danger of over use. Stability® is the culmination of nearly a decade of research and development and represents the current state of the art in natural biological management.

The bacteria used in competing products are inherently unstable. The conditions necessary for their growth and development fall into a very narrow range of temperatures, pH, organic loads, etc. When any of these parameters are not strictly within the proper range, the bacterial culture quickly crashes and dies. Stability® does not contain any of the aforementioned bacteria.


Shake well before use. Turn off UV/ozone. Use 1 capful (5 mL) for each 40 L (10 US gallons) on the first day with a new aquarium. Then use 1 capful for each 80 L (20 US gallons) daily for 7 days. Fish and other aquatic species may be introduced at any time as long as dosage is maintained for 7 days. For optimum biofilter performance use 1 capful for each 80 L (20 US gallons) once a month or with each water change and whenever introducing new fish or whenever medicating an aquarium. Product shelf life is 4 years from date of manufacture, see expiration date below.

Stability® should ideally be used in conjunction with biological filtration such as Seachem Matrix™. For emergency ammonia control, use Seachem AmGuard™.


50 mL, 100 mL, 250 mL, 500 mL, 2 L, 4 L

A: The UV and/or Ozone should be kept off for the 7 days you are dosing if you are cycling or for at 24 hours if it is for Stability additions of new fish or water changes. The reason both should be turned off is because UV and ozone break down and kill bacteria.

A: Yes, Stability will prove very helpful in removing ammonia and nitrite, including nitrate, as a result of the increased bioload. If your ammonia level is not at zero, a combination of Stability and AmGuard is very useful and great in reducing ammonia toxicity on the bacteria blend as the bacteria consumes the ammonia, nitrite and nitrate in the aquarium

A: The bacteria in Stability are alive but not active. They exist in a spore form. They can withstand extreme temperatures and do not require food to survive. When you add them to your aquarium they become active due to dilution.

The bacterias that require refrigeration are active. Refrigerating them slows down their life cycle and they require less food when cold. Because they are active they do require food, and that is packaged with them. They also will not survive extreme heat or cold and will die when they run out of food.

A: It is very hard to overdose Stability. You can really never have too much beneficial bacteria. The worst thing that could happen is a bacterial bloom in the water column, but this is rare and will clear on its own, should it occur.

A: Since every tank will cycle differently, it is difficult for us to give an exact time frame as to when your tank will be fully cycled. However, generally most tanks are cycled within 4-6 weeks.

A: Yes, for expedited cycling times, you will want to add a pinch of food daily until you have an ammonia reading. At that point, you can stop adding the food and let the bacteria run its course.

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0124 Stability 50 mL
0125 Stability 100 mL
0126 Stability 250 mL
0123 Stability 500 mL
0128 Stability 2 L
0129 Stability 4 L