Seachem Stability® Bonus Size – 325 mL
Seachem Stability® Bonus Size 325 mL is a concentrated bacterial supplement designed to help establish and maintain biological filtration in freshwater and saltwater aquariums.
This special 325 mL bonus bottle contains approximately 30% more product than the standard 250 mL size, making it a great value for aquarists cycling new tanks, adding livestock, performing water changes, or supporting an established biological filter.
Key Features
- 325 mL / 11 fl oz bonus-size bottle
- Approximately 30% more product than the standard 250 mL size
- Helps establish biological filtration
- Designed for new and established aquariums
- Suitable for freshwater and saltwater
- May be used when introducing new fish
- May be used after water changes
- Supports biofilter performance
- Contains beneficial bacterial strains
Product Information
- Brand: Seachem
- Product: Stability®
- Size: 325 mL / 11 fl oz
- Package: +30% Bonus Size
- Product Type: Biological filtration / beneficial bacteria supplement
- Use: Freshwater and saltwater aquariums
What Does Seachem Stability® Do?
Stability® contains beneficial bacterial strains selected to help establish and maintain an aquarium's biological filtration system.
These bacteria help process organic waste compounds as the aquarium's nitrogen cycle becomes established.
Stability® can be especially useful when:
- Starting a new aquarium
- Adding new fish
- Performing water changes
- Adding or replacing filtration media
- After aquarium medications are used
- Supporting an established biofilter
Directions for a New Aquarium
Shake well before use.
Seachem recommends the following seven-day startup schedule:
- Day 1: Use 5 mL for every 10 gallons of aquarium water.
- Days 2–7: Use 5 mL for every 20 gallons once daily.
Turn off UV sterilizers and ozone during treatment.
New Aquarium Dosage Examples
| Aquarium Size | Day 1 | Days 2–7 |
|---|---|---|
| 10 Gallons | 5 mL | 2.5 mL daily |
| 20 Gallons | 10 mL | 5 mL daily |
| 40 Gallons | 20 mL | 10 mL daily |
| 55 Gallons | 27.5 mL | 13.75 mL daily |
| 75 Gallons | 37.5 mL | 18.75 mL daily |
Routine Maintenance Dosage
For optimum biological filtration performance, Seachem recommends using:
5 mL for every 20 gallons
Use approximately once per month or when:
- Performing a water change
- Introducing new fish
- Medicating the aquarium
- Supporting biological filtration after maintenance
Can Fish Be Added While Using Stability®?
Seachem states that fish and other aquatic livestock may be introduced while Stability® is being used, provided the recommended seven-day dosage schedule is maintained.
Always monitor ammonia and nitrite closely when stocking a new aquarium, especially during the cycling process.
Freshwater and Saltwater Use
Stability® can be used in both freshwater and marine aquariums.
Suitable applications include:
- Freshwater community tanks
- Planted aquariums
- Cichlid aquariums
- Goldfish aquariums
- Shrimp and snail aquariums
- Marine fish aquariums
- Reef systems
- Quarantine tanks
Using Stability® During Water Changes
Stability® may be added following routine water changes to help support the aquarium's biological filtration.
Use 5 mL per 20 gallons according to Seachem's routine maintenance recommendation.
Using Stability® After Adding New Fish
Adding fish increases the biological load on an aquarium. Stability® may be added when introducing new livestock to help support the biofilter as it adjusts to the increased waste load.
Continue testing ammonia and nitrite after adding livestock, particularly in newer aquariums.
Using Stability® With Aquarium Medications
Seachem recommends Stability® after or during aquarium medication when biological filtration may need additional support.
Follow the instructions for both Stability® and the specific medication being used.
Important Use Instructions
- Shake well before each use.
- Turn off UV sterilization during use.
- Turn off ozone during use.
- Continue normal filtration and aeration.
- Monitor ammonia and nitrite when cycling a new aquarium.
- Do not use bacterial supplements as a substitute for testing water quality.
- Perform water changes whenever ammonia or nitrite reaches unsafe levels.
Does Stability® Instantly Cycle an Aquarium?
Stability® helps establish beneficial bacterial populations, but customers should still monitor water quality throughout the cycling process.
An aquarium should not be considered fully established solely because a bacterial supplement has been added.
Regular testing for ammonia, nitrite, and nitrate remains important.
Frequently Asked Questions
What is Seachem Stability® used for?
It is a bacterial supplement designed to help establish and maintain biological filtration in freshwater and saltwater aquariums.
How much Stability® do I use on the first day?
Use 5 mL for every 10 gallons of aquarium water.
How much do I use after the first day?
Use 5 mL for every 20 gallons daily for the next six days.
Can I use Stability® during water changes?
Yes. Seachem recommends 5 mL per 20 gallons with water changes for optimum biofilter performance.
Can I use Stability® when adding new fish?
Yes. Seachem specifically recommends using it when introducing new livestock.
Can Stability® be used in saltwater?
Yes. Stability® is designed for both freshwater and marine aquariums.
Should I turn off my UV sterilizer?
Yes. Seachem recommends turning off UV sterilization and ozone while Stability® is being used.
Is the 325 mL bottle a standard size?
It is a special +30% bonus-size package based on the standard 250 mL bottle.
Available at Tropical Treasures Wyo
Seachem Stability® Bonus Size 325 mL is available at Tropical Treasures Wyo in Cheyenne, Wyoming, when in stock.
Eligible dry goods are available for shipping.
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