Alkalinity in pond cultured white leg shrimpa factor seemingly simple, back plays a pivotal role in the success or failure of the service, vannamei shrimp. Like an alarm clock, alkalinity signal for farmers to know the health status of the ponds, from which to make decisions in a timely manner to ensure shrimp healthy growth and high yield.

Alkalinity in pond cultured white leg shrimp is what?

Alkalinity is the index measures the amount of minerals including Calcium, Magnesium, Potassium, with the most important ingredient is salt, Calcium Carbonate (CaCO3) and Magnesium Carbonate (MgCO3) in food, water, or through the addition to the shrimp pond. The purpose of this is to help the shrimp molt convenient, increasing the hardness shell and maintain the stability of pH water.

Alkalinity total or Alkalinity, including the ion hidrocacbonat (HCO3-), carbonate (CO32-), hydroxide (OH-) along with the salt of a number of weak acid another as phosphate, silicate, and organic acids. In shrimp pond, alkalinity is measured using a test kit or method of chemical analysis, and is represented by the concentration of CaCO3 (mg/L).

The role of alkalinity in pond cultured white leg shrimp is what?

Alkalinity support the process of shedding of the shrimp take place simultaneously, reducing the risk of peel-and-stick, or peel without the peeling is. When alkalinity is located in the standard level, it acts as a buffer, helping to regulate pH. If increased pH, alkalinity will release H+ ions or OH - to reduce the pH; in contrast, with decreasing pH, the alkalinity helps to bring the pH level balanced and stable throughout the day. At the same time, the alkalinity provides CO2, HCO3 - and CO3 for photosynthesis of algae and support Nitrifying bacteria in the reductive NH3/NH4+ and NO2, help maintain the balance of Calcium ions and CO2, improve water quality in the pond.

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Method of determining the alkalinity in pond cultured white leg shrimp

Alkalinity in water is determined based on the presence of ions of the alkali and alkaline earth such as Na+, K+, Ca2+, Mg2+, combined with the weak acid, and is measured in units of mg/l CaCO3. There are two methods of determining the alkalinity:

• Standard methods in the laboratory: Due to the high technical requirements and process complex mathematical calculation, this method is less commonly used.
• Method quick test: This method has the advantages of simplicity and execution time.

Can use dedicated or test kit to check quickly alkalinity in pond water.

Alkalinity in pond cultured white leg shrimp should be to how much is standard

Alkalinity in pond there are differences, depending on the type of shrimp that people choose. For white shrimp, the alkalinity of the water in the pond varies with each stage of development of shrimp, specific as follows:

• New shrimp drop: alkalinity is the ideal 100-120 ppm.
• Shrimp from 45 days age: adequate alkalinity is in the range of 120-150 ppm.
• Shrimp from 90 days and older: alkalinity should reach the level of 150-200 ppm.

What causes loss of balance alkalinity

– With the high alkalinity: In environmental shrimp, the overgrowth of algae can cause Carbonate in water, converted into CO32-, which increases alkalinity. When the concentration of CaCO3 exceed 200 mg/l and a pH greater than 8.5, the process of makeover of shrimp affected negatively due to the concentration of heavy metals and high acidity, which leads to calcification of the crust. This shrimp molting slowly, causing slow and stool in the pond.

– With low alkalinity: When the content of CaCO3 under 100 mg/l, shrimp have to compete alkaline with the snail species and krill in the pond, affecting the process of molting, made with shrimp is soft shell, curved body, the opaque, slow-growing and can live rates low. In particular, the ponds with low alkalinity than 50 mg/l is usually difficult in creating water color.

How to maintain the balance of alkalinity in pond cultured white leg shrimp?

In the process of shrimp alkalinity in pond cultured white leg shrimp easy is reduced, affecting the health of shrimp. Causes may primarily due to the excessive development of the krill two-piece as mussels and mussels, the bottom of the pond is, alum, or pond is close follower. To raise the alkalinity, first of all, need to clearly define the cause and apply measures handled promptly and efficiently.

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First, the toilet pond is required, including removal of the krill two-piece as mussels, snails, and mussels to quickly improve alkalinity in pond. After that, you can use these types of limestone powder as Dolomite, hydrated lime Ca(OH)2, or NaHCO3 industry. This is way simple and the effect is much the shrimp apply. The ratio recommended is 2-3kg of lime per 100m3 of water. Children can dissolve the lime with water, and then hooked directly into the pond, the best time to perform is at about 10 pm. Should repeat this in a few days to achieve the results raise the alkalinity.

If the pond has many beneficial microorganisms and algae, and need to handle algae, especially in the morning when the amount of oxygen in the water is high. Use probiotics to remove algae solution is safe and durable. Children can reference probiotic Microbe-Lift PBD, a product that helps kill the algae are harmful such as algae armor, algae, eye, and red algae, at the same time decomposed corpse of algae, clean the water and reduce toxic gas due to the algae die cause.