Seachem Stability 250mL ^126

Rapidly Establishes a Healthy Biofilter for Freshwater and Marine Systems

Seachem Stability® 250mL is designed to safely and effectively establish the aquarium biofilter, preventing the #1 cause of fish death: “new tank syndrome.” Formulated specifically for aquariums, Stability® contains a synergistic blend of aerobic, anaerobic, and facultative bacteria that break down waste organics, ammonia, nitrite, and nitrate. The bacteria are non-sulfur fixing and harmless to all aquatic life, including fish, invertebrates, and plants.

Unlike competing products, Stability® bacteria are highly resilient, thriving in a broad range of conditions and even performing better under high organic load conditions. The bacteria exist in a spore form, allowing long shelf life without refrigeration, and activate immediately upon introduction to the aquarium.

Key Benefits:

• Rapidly establishes a healthy biofilter in new and established tanks

• Breaks down ammonia, nitrite, nitrate, and organic waste efficiently

• Safe for all freshwater and marine fish, plants, and invertebrates

• Non-sulfur fixing; prevents hydrogen sulfide formation

• Broad range tolerance for temperature, pH, and organic load

• Long shelf life without refrigeration; spore-form bacteria activate on addition

• Hard to overdose – rare bacterial blooms self-clear

Usage Guidelines:

• Dose daily for 7 days when cycling a new tank, or as recommended for boosting biofilter capacity

• Turn off UV and ozone devices during dosing (7 days for new tanks, 24 hours for established tanks)

• Can be combined with Seachem AmGuard if ammonia is present for rapid detoxification

FAQ Highlights:

• Bacteria activate in 24 hours after addition to the aquarium

• Overdosing Stability® is safe; excess bacteria may temporarily bloom but self-resolves

• Most tanks are fully cycled within 4–6 weeks using Stability®

• For fishless cycling, add a small ammonia source or pinch of food daily until ammonia is detected

Support your tank’s health from day one with Seachem Stability 250mL, the reliable choice for establishing and maintaining a thriving, balanced aquarium ecosystem.

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