StatusShrimp and fish ponds are pollutedalways a big obsession of aquaculture farmers. If not handled promptly, the quality of shrimp and fish will be seriously affected, even leading to the risk of losing everything overnight when shrimp and fish die en masse. To minimize heavy damage and improve productivity, finding a suitable solution for treating the pond environment is extremely urgent.Sharing corner:Secret to handling polluted fish and shrimp ponds most detailed
Polluted shrimp and fish ponds cause great damage to farmers
1. Causes of shrimp and fish pond pollution
Many households raising shrimp and fish more or less intensively encounter pond pollution. The cause of this situation is due to the following factors:
1.1 Using industrial food
Shrimp and fish are raised with industrial feed containing high nutrients, especially phosphorus and protein. When excess unconsumed food and shrimp feces are deposited, this increases the amount of organic solid waste suspended in the pond.
Shrimp and fish ponds contain a large amount of protein (64%) and phosphorus (77%) due to food sources discharged into the water environment in insoluble form.ordissolve. When not treated regularly, the water in the pond will change color and have a foul odor, affecting the amount of aquatic products.
1.2 pH and alum
Experiencing floods, the pH in ponds often decreases because rainwater contains weak acids mixed with pond water. Along with that, the soil around the pond is contaminated with alum. When rainwater seeps into the soil, it will force the alum to flow directly into the pond, increasing the amount of iron ions.
Water in ponds is contaminated with alum, which sticks to the gills of shrimp and fish, causing animals to have difficulty breathing and poor nutrient absorption. Besides, the amount of microorganisms and algae is also affected.
1.3 Sudden changes in the environment
Unpredictable weather and sudden environmental changes can easily cause shrimp and fish to float, weaken and lose resistance. Then, they get infected with viruses and bacteria, causing outbreaks in the polluted pond.
Environmental changes impact shrimp and fish, leading to diseases and pond pollution
2. Effects when shrimp and fish ponds are polluted
Shrimp and fish pondspollutionnot onlydoaffecting output, reducing harvest productivity but also leaving major impactsother like:
2.1 Toxic algae grow
Excessive accumulation of organic waste in ponds is the leading cause of pollution. In particular, in shrimp and fish ponds without lining, this amount of waste is more likely to settle and accumulate at the bottom, creating favorable conditions for the explosive growth of harmful toxic algae.
2.2 Accumulation of toxic gases in the pond
Because the total amount of nitrite, nitrogen protein, ammonium protein, nitrate and H2S increases rapidly during the farming cycle, it affects the metabolism of shrimp and fish. At the same time, it reduces water quality and toxic gases accumulate, leading to the death of shrimp and fish.
2.3 The amount of dissolved oxygen in the pond decreases
Water in shrimp and fish ponds becomes polluted mainly due to the accumulation of high amounts of organic waste. The process of decomposing these wastes is vigorous, consuming a large amount of dissolved oxygen (DO) in water. When oxygen levels drop to low levels, fish and shrimp habitats are seriously affected, causing stress, weakening health, and even leading to mass deaths.
2.4 Causes disease in shrimp and fish
Large amounts of shrimp and fish living in polluted ponds are susceptible to diseases like black gills, shrunken gills, low weight, etc. When they get sick, they will stop eating, their bodies will become weak and they will die en masse.
Shrimp and fish get sick when raised in heavily polluted ponds
3. Observe and check water quality periodically
Controlling water quality is a key factor in preventing and promptly treating pollution. Farmers need to regularly monitor the following indicators and signs:
3.1 Check environmental indicators
- Use the test kit to measure important indicators such as pH, alkalinity, dissolved oxygen (DO) concentration, clarity, and especially toxic gases such as Ammonia (NH3/NH4+), Nitrite (NO2−), and Hydrogen Sulfide (H2S).
- Monitor sudden changes in these indicators to intervene before shrimp and fish are seriously affected.
3.2 Observe water color and smell
- Water color: Pond water that turns dark green, blue, or deep red often signals an overgrowth of toxic algae or blue-green algae.
- Smell: The water has a fishy smell, the smell of rotten eggs (H2S) is a clear sign of the accumulation of organic matter and toxic gases at the bottom of the pond.
3.3 Observe the activities and health of shrimp and fish
- Shrimp and fish showing signs of not eating, swimming sluggishly, floating their heads (especially in the early morning or evening), or showing signs of clinging to the pond wall are warnings of a deteriorating environment (usually DO deficiency or toxic gas contamination).
- Check for signs of pathology such as black gills, shrunken gills, or body discoloration.
Periodic observation and inspection not only helps identify the cause of pollution early but also serves as a basis for adjusting food dosage, frequency of using biological products, or deciding when to give emergency treatment by aeration and water change. Prevention is better than cure, so regular monitoring will help maintain a stable and sustainable pond environment.
4. Effective treatment of contaminated shrimp and fish ponds
With harmful effects that greatly affect life and economic output, shrimp and fish farmers need to have proper and scientific measures to treat ponds.
Use probiotics
Biological products contain a large amount of microorganisms that stabilize the virtual environment, create stable water color, decompose excess food and resolve toxins in the pond. At the same time, it inhibits and prevents the growth of pathogens, effectively protecting shrimp and fish. In particular, probiotics do not contain hormones, toxic hormones and antibiotics, so aquaculture farmers can feel completely secure when using them for long periods of time. 2 types of preparationsmicrobiology for aquatic productsSpecialized in treating contaminated shrimp and fish ponds are:Em products are of aquatic originandBiological product EMZEO Dr
EM biological products based on aquatic products specialize in environmental treatment of shrimp and fish ponds
How to handle:
Using probiotics properly helps maximize their effectiveness and treat the environment of shrimp and fish ponds to meet standards. Specifically:
- Before releasing shrimp and fish, you should use 1 package of EMZEO TS 250gr/2,000 m3 of water.
- The first month use 250gr/1,000 m3 of water, continuously for 15 days, once a day.
- The second month use 300gr/1,000 m3 of water, continuously for 10 days, once a day.
- The third month use 400gr/1,000 m3 of water, continuously for 7 days, once a day.
- For heavily polluted fish and shrimp ponds, it is necessary to use 500 – 1000g/1,000 m3 of water, continuously every 5 – 7 days.
- After using antibiotics or disinfectants, use 1,000g/5,000 m3 of water.
EMZEO TS product has many uses in aquaculture, especially acute treatment of pond environmental pollution.
Note: Microbial products should be diluted with water and then sprinkled evenly throughout the pond or corner to regularly feed shrimp and fish.
Use microbial products to treat heavily polluted aquaculture ponds
Technology solutions
For shrimp and fish ponds with large areas in the areas of Bac Lieu, Ca Mau, Soc Trang, etc., aquaculture farmers can choose traditional technology solutions. Including types of farming: improved extensive farming, extensive farming or ecological farming.
Types of farming that use natural food combined with a small amount of supplemental food help protect the pond and reduce pollution. The amount of shrimp and fish after harvest often has a high selling price.
For people with experience or businesses raising shrimp and fish, they should choose advanced technology such as: Farming in greenhouses, farming with tarpaulins.bottom, circulating filter, Biofloc,… This method requires high investment capital but significantly reduces the impact on the pond, helping shrimp and fish grow well and produce high yields.
Renovating shrimp and fish ponds
Ponds that are in the process of raising shrimp and fish for many seasons, are heavily or lightly polluted and need to be renovated as soon as possible. Aquaculture farmers should scrape off all the black mud accumulated at the bottom of the pond and spread quicklime at a dosage of 10 – 12kg/100 m2.
Then, level the floor so that the bottom of the shirt slopes slightly toward the drain. After being renovated, the pond needs to be dried for 5-7 days to clean before starting a new batch of shrimp and fish farming. In addition, if possible, shrimp and fish farmers should invest in spreading tarpaulin on the pond edge or bottom to minimize pollution. This method helps periodically siphon waste out quickly, conveniently and cost-effectively.
Renovate and clean contaminated shrimp and fish ponds
Use a porcupine quill fan
High-density shrimp and fish ponds often have a large amount of waste, easily generating a lot of toxic gases that settle in the water. Therefore, aquaculture farmers should install porcupine feather fans so that oxygen is supplied to the bottom of the pond. Increases the aerobic decomposition process in bacteria combined with chemical reactions to help shrimp and fish breathe easily.
Change food sources
As mentioned above, food source is the leading cause of the conditionPolluted fish and shrimp ponds.Therefore, farmers need to find ways for shrimp and fish to fully absorb nutrients, leaving less leftover food in the water. It is best to choose quality food and feed according to technical procedures. At the same time, you should rely on the appetite of the aquatic animals to adjust the feeding method into several batches with sufficient quantity.
Methods of polyculture
Instead of just raising shrimp and fish in many separate plots, aquaculture farmers can choose poor farming methods to limit the amount of waste. For example, shrimp farming can be combined with tilapia, rabbitfish, mullet, snails, seaweed, etc.
Kill algae in the pond
For ponds attacked by toxic algae, disinfectants BKA, BKC, TCCA, copper sulfate and quicklime should be used. Disinfect the pond 1-2 times, each time about 2-3 days apart. Dosage should be mixed according to the instructions printed on the manufacturer’s packaging.
Note: Using lime to kill algae can make dirty pond water smell fishy, so only use it in urgent times and limit use on hot days.
Destroy toxic algae that pollute water in aquaculture ponds
5. Preventing diseases in shrimp and fish after treating polluted pond water
Shrimp and fish live in polluted pond environments and experience poisoning, causing their bodies to have reduced resistance and lack of oxygen. Immediately after cleaning the pond, farmers need to combine using herbs to treat diseases for shrimp and fish: Ekavarine or pomelo powder.
At the same time, use vitamins B1 and C to prevent shock and increase resistance for seafood. For infected shrimp and fish, it is necessary to use antibiotics to treat promptly and then raise them in a water environment with a transparency of 30 – 40 cm.
⫸ See more:What kind of fish pond water treatment medicine is good?
⫸ See more:Solution to thoroughly treat polluted and stinky fish pond water
6. Address for providing microbial products to treat contaminated shrimp and fish ponds
When deciding to use microbial products to treat polluted ponds, choosing a reputable supplier is extremely important. Because this product is widely popular on the market, it is difficult for farmers to avoid buying fake products of poor quality and unknown origin, leading to unsatisfactory results and also wasting investment costs.
Microbial products to treat pollution in aquaculture ponds – Em products based on aquatic products
Therefore, to feel secure about the product as well as save costs, customers can refer to some products at the Duc Binh brand. We specialize in a variety of top quality microbial products in Vietnam.
Microbial product Duc BinhThoroughly researched, produced on modern production lines and strictly censored before being released to the market. Therefore, when ordering products here, customers do not have to worry about quality but also ensure the environment and health for long-term use.
To order microbial products to treat aquaculture ponds, please contact hotline: 024.6655.5686. Our staff answers all questions and provides dedicated, thoughtful advice.
Thus,Polluted shrimp and fish pondsDue to many reasons, it greatly affects aquatic health and risks losing all production overnight. Therefore, aquaculture farmers need to take timely measures to treat pollution, improve and regularly observe the living environment of shrimp and fish.
⫸ See more:Probiotics for shrimpWhat is it? The most effective and economical way to use
Contact information
Phone number: 0934.214.579
Hotline: 024.66.55.46.86
Website:https://chephamvisinh.vn
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