HOW TO ENHANCE WATERCOLOR IN SHRIMP POND
In aquaculture in general and shrimp-fish farming in particular, watercolor plays a very important role in the formation of natural food chains, biological filtration systems, and stabilization of environmental parameters. In other words, if aquaculture wants to be successful, it must first raise and keep the watercolor stable and sustainable.
In fact, the watercolor in ponds and aquaculture ponds is formed mainly by phytoplankton (Phytoplankton), zooplankton (Zooplankton), algae, larvae, crustaceans, etc. The coloration of pond water is extremely necessary, directly affecting the growth and development of shrimp in the first months of stocking.
Some of the benefits of making pond watercolors include:
- Watercolor facilitates plankton growth, reduces the water’s clarity, obscures the light, and limits the growth of algae and algae on the pond’s bottom.
- Reduce water temperature fluctuations, and increase dissolved oxygen.
- Plankton growth will reduce toxic substances, avoiding shock to shrimp
- Create a rich source of natural food, help shrimp grow and develop well, and save a part of feed costs in the early stages.
Make watercolor with rice bran, fish meal, soybean meal
Incubate the mixture in a ratio of 2: 1: 2
2kg of rice bran or corn bran + 1kg of fish meal + 2kg of soybean meal and mix well, then cook, refrigerate for 2-3 days.
Dosage 3-4 kg/1,000 m3 of water, apply continuously for 3 days, until the pond has a beautiful color, and reaches the clarity of 30-40 cm, then proceed to stock.
7 days after additional application, the dose is reduced by ½ compared to the original, based on watercolor to supplement.
Make water color with molasses, rice bran, soybeans
Incubate the mixture in the ratio 3: 1: 3
3kg molasses + 1kg rice bran or corn bran + 3kg soybean meal and mix well, then incubate for 12 hours to be used. Liều lượng 2 – 3 kg/1.000 m3 nước, bón liên tục trong 3 ngày, cho đến khi ao lên màu đẹp, đạt độ trong 30 – 40 cm thì tiến hành thả giống.
7 days after additional application, the dose is reduced by ½ compared to the original, based on watercolor to supplement.
Coloring water with inorganic substances
Apply chemical fertilizers for ponds such as urea phosphate fertilizer (N-P-K=16:2:0); urea (N2H4CO); N-P-K (46:0:0) or super phosphate (N-P-K=16:16:16). In particular, urea phosphate is used the most with the amount of fertilizer from 40-50 kg/ha (20-25 days). Dissolve manure with water according to the dosage specified by the manufacturer and then spread it around the pond.
When successfully causing beautiful watercolor, the algae grows well, the clarity reaches 30-40 cm, then stocking can be carried out.
However, this method of causing watercolor basically causes watercolor, but in a week, at most, about half a month, the water becomes clear and drops algae. If using products containing chemical fertilizers, although the effect is fast, the stability time is not long.
Make watercolor by using some artificial coloring products for ponds
Currently, in order to save time on creating watercolors in the early stages of pond culture, many industrial farming models have used some products to create fake watercolors (tea color) for ponds. Many products, after only 2 hours of use, have the color of tea and can be stocked. False color helps to make a screen to avoid clear water, prevent direct sunlight from affecting shrimp, avoid the phenomenon of phototropic post shrimp, reduce stress, and limit bottom algae, and algae growth.
However, the use of artificial coloring products helps to create watercolor very quickly, saving a lot of time, but not creating a natural food source in the pond in the early stages, which will consume a lot of industrial feed, and the FCR coefficient will be higher than that of ponds that create natural food sources.
How to make watercolor with microbial products
Watercoloring by microbiological powder BEC 600S
BEC 600Shelp turn tea brown – straw yellow after 24h. In addition, it also helps to treat tarpaulin water after 24 hours, increase dissolved oxygen in the pond, reduce the accumulation of organic bottom humus and substrate, improve control of NH3 and H2S gas, inhibit harmful bacteria, and improve the environment. water school.
Before stocking shrimp cause watercolor with dosage:
1 pack of BEC 600S + 2kg of molasses + 1kg of rice bran + 30 liters of pond water: Aerate from 12-24 hours and pour evenly into the pond at 7-9 am with sunshine.
Beat 2 consecutive days with the above brewing recipe. On the 3rd day, shrimp stocking started.
Then switch to periodic beating
- Use 1 pack of BEC 600S for 1,000 – 3,000m3, once every 3 – 5 days to maintain the population of beneficial bacteria in the pond. (The product can be aerated with molasses before use to increase product potency)
The parent form of E.M: SCD PROBIO
SCD PROBIO, in addition to causing watercolor, also helps to treat water, control toxic algae, and treat odors in the pond. Provide beneficial intestinal bacteria when mixed into shrimp/fish feed.
Activate SCD PROBIO with dosage:
- 1 part E.M: 40 parts molasses: 360 parts clean water (no chlorine)
(Activation process please contact Thai Nam Viet company for further instructions)
Before stocking shrimp cause watercolor with the following dosage:
- Use 5 liters of activated EM for 1,000m3 of water.
- Beat 2 days in a row with the above dose. On the 3rd day, shrimp stocking started.
Then switch to periodic beating
- Use Min 2 liters of activated E.M. for 1,000m3, once every 3-5 days to maintain the watercolor and the population of beneficial bacteria in the pond.
- It can be mixed to feed min. 5ml/kg of food to support digestion.
Note when causing watercolor in ponds
- Do not use probiotics concurrently with herbs, antibiotics, and bactericidal chemicals, use the correct dosage.
- It is necessary to manage the amount of food for shrimp well and avoid excess, thereby creating conditions for harmful bacteria and toxic algae to thrive, difficult to cause watercolor, adversely affecting animal health.
- In the process of shrimp farming, farmers need to regularly monitor watercolor and water quality indicators to take timely treatment measures, create a stable water environment, and create conditions for the best development of farmed shrimp, which brings high productivity and economic efficiency.
Above are 5 ways to make watercolors in ponds that Thai Nam Viet would like to introduce to you. Hope to be able to share and accompany you in farming. Wishing you a successful harvest season.
