Microlife S2 is a liquid beneficial bacteria supplement designed to establish and maintain the biological filtration in freshwater aquariums. It contains live nitrifying bacteria that help convert toxic waste products into less harmful forms. It supports tank cycling, improves water clarity, and reduces stress on fish.

What It Does

• Converts ammonia → nitrite → nitrate through live nitrifying bacteria.

• Breaks down fish waste, uneaten food, and organic debris.

• Stabilizes the nitrogen cycle in new and existing aquariums.

• Helps keep water crystal clear.

• Reduces fish stress and mortality by controlling ammonia and nitrite spikes.

• Safe for all fish, shrimp, snails, and plants.

• Natural alternative to chemical treatments.

Bacterial Composition

Microlife S2 contains:

• Nitrosomonas – converts ammonia into nitrite.

• Nitrobacter – converts nitrite into nitrate.

These are essential nitrifying bacteria that form the backbone of a healthy aquarium’s biological filter.

Benefits

• Rapidly matures new aquariums.

• Helps kickstart the nitrogen cycle.

• Maintains biological stability in established aquariums.

• Prevents ammonia and nitrite spikes.

• Enhances filter performance.

• Keeps water clearer by improving biological decomposition.

• Reduces bad smells associated with waste buildup.

• Promotes healthier fish and invertebrates.

Dosage & Usage

Standard Dose:

• 10 ml per 100 liters of aquarium water.

New Tank Setup (Quick Cycling):

• Dose daily for 5 days.

Weekly Maintenance:

• Dose once a week at the standard rate.

After Water Change or Filter Cleaning:

• Add the standard dose to replenish bacteria.

Instructions:

• Shake well before use.

• Pour directly into the aquarium or filter chamber.

• Turn off UV sterilizers for 24 hours after dosing (if applicable).

Storage

• Store in a cool, dry place.

• Keep away from direct sunlight and heat.

• Do not freeze.

• Keep sealed tightly when not in use to preserve bacterial viability.

Available Sizes

• 50 ml

• 100 ml

• 200 ml

When to Use

• New aquarium cycling

• After large water changes

• After filter maintenance

• When biological filtration seems weak

• When fish show stress due to poor water quality

• In high-stocked tanks with heavy feeding

Limitations / Notes

• Not an instant cycle in all cases — still monitor ammonia, nitrite, nitrate.

• Effectiveness depends on water conditions like temperature, oxygen levels, and pH.

• Improper storage can reduce bacterial effectiveness.

• Works best alongside proper filtration and regular maintenance.