Stable Biofloc Maintenance: 4 Formulas for Biofloc System Maintenance to Prevent Crash

Stable biofloc maintenance is a major challenge for farmers adopting intensive biofloc systems. Without proper maintenance, flocs can over-clump or crash, causing ammonia spikes and mass mortality. One effective solution is using the Biofloc System Maintenance Formula containing probiotic and nitrifying bacteria. This article discusses application methods, dosage per hectare, frequency, and timing to maintain your biofloc system balance.

Why Is Stable Biofloc Maintenance Important?

The biofloc system relies on microbial communities to process nitrogen waste. If balance is disrupted, ammonia and nitrite can rise dramatically. Bacillus subtilis helps maintain active flocs, while Nitrosomonas sp. and Nitrobacter sp. ensure optimal nitrification. Without routine maintenance, these bacterial populations can decline, causing system crash. With regular application, farmers can maintain high stocking densities without water quality risks.

4 Formulas for Biofloc System Maintenance

1. Use of Probiotic Bacteria Bacillus subtilis

Bacillus subtilis is a Gram-positive bacterium that produces extracellular enzymes to degrade feed residue and feces. In biofloc contexts, it helps maintain stable floc size (100-200 µm) to prevent excessive settling. Recommended dose is 2 L per 1000 m³ of water, applied every 7 days in the morning. Bacillus subtilis also produces antimicrobial compounds that suppress Vibrio spp. pathogens, reducing disease risk.

2. Nitrifying Bacteria: Nitrosomonas sp. and Nitrobacter sp.

Nitrosomonas sp. oxidizes ammonia (NH₃) to nitrite (NO₂⁻), while Nitrobacter sp. oxidizes nitrite to nitrate (NO₃⁻). Both bacteria are crucial to prevent toxic compound buildup. The Biofloc System Maintenance Formula contains high concentrations of these bacteria. Weekly routine application ensures nitrifier populations remain dominant, keeping ammonia below 0.5 mg/L and nitrite below 1 mg/L.

3. Carbon and Oxygen Management

Although not part of the product, stable biofloc maintenance also requires a proper C/N ratio (10-15:1) and dissolved oxygen >4 mg/L. Aerobic bacteria like Bacillus subtilis and nitrifiers need oxygen to function. Ensure adequate aeration, especially after probiotic application. Carbon from molasses or cassava flour can be added if flocs start clumping.

4. Water Parameter Monitoring

Conduct routine measurements every 2-3 days: ammonia, nitrite, nitrate, pH (7-8), alkalinity (>100 mg/L CaCO₃), and floc volume (Imhoff cone). If floc volume >40 mL/L, reduce feed or increase aeration. If <10 mL/L, add probiotics and carbon. With monitoring, you can adjust the Biofloc System Maintenance Formula dosage.

How to Apply the Biofloc System Maintenance Formula

Dosage per Hectare

For a 1000 m³ pond (1 hectare with 1 m depth), the dose is 2 L of product. For larger ponds, calculate proportionally. For example, a 2000 m³ pond requires 4 L. The product is packaged in 1 L, 5 L, and 20 L jerrycans for distributor convenience.

Frequency and Timing

Application is done every 7 days in the morning (07:00-09:00) when water temperature is still low (25-30°C) and dissolved oxygen is high. Avoid application during rain or when aeration is off. After application, keep aeration running for at least 30 minutes to distribute bacteria evenly.

Application Method

Dilute the product with pond water (1:10) before broadcasting evenly over the surface. Do not mix with disinfectants or chlorine. For optimal results, apply after water exchange or after adding molasses.

Case Study: Biofloc Stability with Routine Maintenance

In a vaname shrimp center in Lampung, farmers using the Biofloc System Maintenance Formula weekly for 2 months saw ammonia drop from 2 mg/L to 0.3 mg/L and floc volume stabilize at 25 mL/L. Stocking density of 300 shrimp/m³ remained safe until harvest. In contrast, farmers without routine maintenance experienced a crash at week 6 with 30% mortality.

Advantages of Using the Biofloc System Maintenance Formula

• Prevents system crash: Nitrifying and probiotic bacteria work synergistically to maintain balance.
• Maintains high stocking density: Water quality is preserved, disease risk is low.
• Recurring revenue for distributors: Product needed weekly, creating recurring income.
• Easy to apply: Fixed dosage, no special equipment needed.

Conclusion

Stable biofloc maintenance is key to successful intensive aquaculture. By regularly applying the Biofloc System Maintenance Formula—2 L per 1000 m³ every 7 days in the morning—you can prevent crash, maintain water quality, and increase productivity. For further consultation, contact the Biosolution technical team via WhatsApp. See the full product: Biofloc System Maintenance Formula.

FAQ

What causes a biofloc system to crash?

Biofloc crash is usually caused by a decline in nitrifying bacteria populations due to extreme temperature changes, oxygen deficiency, or overfeeding. As a result, ammonia and nitrite spike, flocs disintegrate, and shrimp/fish become stressed. Routine maintenance with nitrifying and probiotic bacteria can prevent this.

What is the dosage of the Biofloc System Maintenance Formula for a 500 m³ pond?

The dose is 2 L per 1000 m³, so for a 500 m³ pond, 1 L is sufficient. Dilute with pond water 1:10 and broadcast evenly. Apply every 7 days in the morning.

Is this product safe for shrimp and fish?

Yes, the product contains natural non-pathogenic bacteria that have been tested. Bacillus subtilis, Nitrosomonas sp., and Nitrobacter sp. are safe for aquatic biota. No side effects if dosage is correct.

Can the product be mixed with other probiotics?

It is best not to mix with products containing antagonistic bacteria or disinfectants. However, it can be used together with molasses or organic carbon. Consult with a technician for specific combinations.

When is the best time to apply the product?

Morning (07:00-09:00) when water temperature is low and dissolved oxygen is high. Avoid midday heat or when aeration is off. Ensure aeration is running after application.