ECO BLUE – A biological solution that effectively controls water mold (Saprolegnia) in shrimp farming ponds

Coin-shaped fungus (dog paw fungus, lichen) has always been ECO BLUE – A biological solution that effectively controls water mold (Saprolegnia) in shrimp farming pondsa persistent nightmare for shrimp farmers, especially in lined ponds. It not only contaminates the water environment but is also a direct cause of serious intestinal diseases in shrimp.

1. What is “Coin-shaped fungus” and Why Is It Dangerous to Shrimp?

Coin-shaped fungus (commonly known as water mold (Saprolegnia) is actually a symbiotic association between fungi and algae (lichen). It usually appears as round, scale-like patches that firmly attach to pond liners, paddlewheel aerators, equipment, or the pond bottom.

Serious impacts of Coin-shaped fungus on shrimp:

• Causes intestinal diseases: Coin-shaped fungus has a strong fishy odor that attracts shrimp. When shrimp ingest it, toxins released can damage the intestinal lining, leading to loose gut, segmented feces, and even white feces disease.
• A hiding place for pathogens: Its rough surface provides an ideal habitat for harmful bacteria (especially Vibrio spp.), parasites, biofilm, and organic slime to accumulate.
• Reduces dissolved oxygen and increases toxic gases: Coin-shaped fungus traps organic waste, promoting the formation of toxic gases such as NH₃ (ammonia) and NO₂ (nitrite) at the pond bottom, negatively affecting shrimp health and survival.

Coin-shaped fungus appears in the shrimp pond

2. Why can ECO BLUE probiotics inhibit “Coin-shaped fungus” (fungal mats)?

Unlike mechanical scrubbing of pond liners (which causes fungal spores to spread more aggressively) or the use of chemicals (which can shock shrimp and kill beneficial algae), ECO BLUE addresses the problem based on the principle of Biological Competition and Biofilm Formation. 

The product delivers an extremely high concentration of beneficial bacteria Bacillus licheniformis, which work powerfully through three key mechanisms:

Establishment of a Biofilm layer
- This is the most advanced mechanism of ECO BLUE. When introduced into the water environment, the beneficial bacterial spores are rapidly activated and adhere to the surfaces of pond liners and aeration equipment (paddle wheels).
- At these surfaces, the bacteria secrete extracellular polymeric substances (EPS) that bind them together, forming a stable biofilm layer that fully coats the material surfaces.
- This biofilm acts like a “slippery protective shield,” completely occupying the available surface area. As a result, money fungus spores lose their attachment points and cannot anchor or develop. Existing fungal patches are gradually isolated, lose their foothold, and naturally detach and disappear over time.

the biofilm

Nutrient Competition (Cutting off the Food Source)

The beneficial bacteria in ECO BLUE actively consume excess organic matter in the water and pond bottom. When these nutrients are rapidly utilized by probiotics, filamentous algae (fungal algae) are deprived of their food source, causing them to weaken and gradually die off.

Enzyme Secretion to Inhibit Bacteria and Filamentous Algae

Specific Bacillus strains also have the ability to secrete extracellular enzymes that break down the cell walls of algae and harmful microorganisms, effectively removing slime from pond liners and decomposing bottom sludge.

ECO BLUE – Controls bacterial infections and coin-shaped fungal growth in shrimp culture systems.

3. ECO BLUE – The “Ultimate Nemesis” of Fungi and Toxic Gases

ECO BLUE is a specialized biological solution developed by My Binh Export-Import Trading Limited Company, specifically optimized for bottom pond treatment in high-tech aquaculture systems.

Superior Composition & Outstanding Benefits: ECO BLUE contains a high concentration of Bacillus spp., delivering a powerful dual-action effect:

• Root-level inhibition of filamentous fungi (blue-green fungi / coin-shaped fungi): Thanks to its biofilm-forming mechanism, ECO BLUE prevents fungi from reattaching and recurring.
• Rapid bottom sludge decomposition: Effectively breaks down black sludge and organic waste within just 3 days, resulting in a firmer, more elastic pond bottom and significantly reducing the need for dredging.
• Eliminates foul odors & toxic gases: Neutralizes unpleasant odors caused by H₂S and NH₃ within 24 hours, helping to reduce stress and improve shrimp health.
• Improves water clarity & stability: Restores clean, clear water and stabilizes pond color within 2–3 days, supporting a balanced and healthy culture environment.

ECO BLUE - Inhibits bacteria and fungi for shrimp ponds

4. Guidelines for Effective Use of ECO BLUE

To ensure optimal Biofilm formation and effectively inhibit fungal growth, farmers should strictly follow the recommended dosage:

• For lined ponds (high-tech farming systems): Dosage: 250 g of ECO BLUE for 2,000 – 3,000 m³ of water. Application: Use daily to maintain a stable population of beneficial bacteria and a continuous Biofilm layer. This is the key factor that prevents fungi from re-infecting the pond.
• For earthen ponds: Dosage: 250 g for 3,000 m³ of water; Frequency: Apply every 5 – 7 days
• For extensive ponds: Dosage: 250 g per 2500m2; Frequency: Apply every 5 – 7 days

Although filamentous fungi (“money fungus”) are persistent, they can be effectively controlled by the power of modern microbial technology. With its unique Biofilm-forming mechanism, ECO BLUE provides comprehensive protection—helping farmers confidently eliminate fungal problems while keeping shrimp healthy and stress-free.

For detailed technical consultation on fungal control solutions for your shrimp ponds, please contact My Binh:

📞 Hotline/Zalo/WhatsApp: +84 939881532 🌐 Website: mybinh.com.vn

Wishing you successful pond management and healthy shrimp reaching market size!