Water quality management parameters must be known: residual chlorine, total alkalinity, total hardness – Aquatic Forum – China Animal Husbandry Website – A useful animal husbandry website
● The concentration of the remaining chloride in the residual chlorine should be controlled below 0.02 mg / L. When more than 0.02 mg / l, a corrosion effect is caused to fish shrimp mucosa and the worm; the water in the water body is 0.1 mg / l or more, which will cause fatal harm to fish and shrimps.
● Copper copper ≤0.01mg / L
● Chromium chromium ≤0.1 mg / L
● Total alkalinity aquatic breeding suitable total alkalinity range is about 75-200mg / L between.
Freshwater or low salinity breeding shrimp, total alkalinity requirements are greater than 75 mg / L.
Seawater breeding shrimp, total alkalinity requirements greater than 100mg / L, the total amount of seedlings is greater than 120mg / L.
The total alkalinity of the pool is too low, and the acid-alkalinity (pH) of the water is large, and the morning may be low in the morning, and the afternoon may be high.
The total alkalinity is to ensure the stable acid-alkalinity (pH), helping the shrimp (crab) shell hard.
The acid-alkali (pH) of water is stable, and the nutrient salt in the water is high, which is advantageous for steady growth of plankton such as algae.
The total alkal is high, heavy metals such as copper, and zinc are lowered. In the epidemic season or rainy season of shrimp disease, the total amount of the pool is preferably raised to 120-150 mg / L.
The total alkalinity of seedling water is preferably raised to 120 mg / l or more.
When the total alkal is low, the dolomite powder can be used 2 acres of / package, or use the baking soda 10 pounds / mu, and a small amount is more than 80-150mg / l.
● Most freshwater fish in total hardness, warm water fish suitable for about 50 mg / L, sea water culture is usually 80-120 mg / L.
Hardness is closely related to the alkalinity, but they are two different concepts. When expressed in mg, the total hardness value is usually similar to the alkalinity value, because most of the constituent components of the alkalinity are mainly calcium and magnesium. The hardness from the carbonate is typically referred to as temporary hardness – precipitation after boiling; hardness from non-carbonate – such as sulfate, hydrochloride, nitrate, and silicate, the hardness of the silicate is called permanent hardness, although they The proportion in the daily hardness is small, if the hardness of the water body has permanent hardness, then the alkalin in the water body is very low, if the water is alkalinThe main carbonate, potassium, then the hardness of the water body is very low.
1 German (CAO) = 10mg / L = 10ppm
● Total Iron is 0.3mg / L in the water body according to GB3838-2002 “Surface Water Environmental Quality Standard”.
The data and expression originates from
(1) “Fisheries Water Quality Standard”
(2) Central Agricultural Broadcasting School Trial Textbook “Pond Fish Fish”
(3) The Freshwater Fisheries Research Center of the Chinese Academy of Sciences Information, etc.
Seawater pond culture detection
The water temperature is 11-30 degrees;
pH range 7.5-8.6;
The dissolved oxygen content is above 5 mg / L;
ammonia nitrogen content is 0.5 mg / L or less;
The nitrite content is below 0.1 mg / L;
Transparency is at 30-40 cm.
Pond Treatment: 1 week before the pond is released, the anti-secting liquid made from the dilution of the biological EM bacteria with 100 ~ 300 times, the chemicals of the biological EM bacteria, which is used for the antibiotic fluid, which is used in the antibiotic fluid, which is used in the antibiotic fluid. Equisounces, sprayed the pond, used to disinfect and purify them. 2.5 liters per acre of water.
Water quality purification: 3 to 10 days prior to stocking, the dilution of the biological EM bacteria with a bio-EM bacteria in the presument. Depending on the water quality, starting 15 days, after a month, the water quality is poor, properly shortening the sprinkle time. It is used in a 15-acre surface (1.5 meters or less).
Pond binder fermentation: According to the pond base, Cui Gome Island Aquaculture Bioengiostera, brown sugar = 500: 1: 1, adding appropriate water, mixing accumulation of 7-14 days.
Take the bait Add: According to 0.2% of the amount, evenly spray it on the bait.
Treatment of animal bait: When feeding fresh animal bait, stir well according to 0.1%.
Disinfection: Decoction of the cultivation tool such as the cultivation tool such as the cultivation tool and fishing nets with 200-500 Double Emperor’s aquaculture.
Aquatic products preservation: 10 times the green island seafood produced, fresh living agent, every 1-2 daysSpray aquatic product fresh water tank, can extend the freshness of the aquatic product, keep the meter luster.
Cuverong Island Biotechnology is recommended from Japan’s Cui Green Island Seafood Production Preservative, which is made of photorated flora, lactic acid flora, yeast group, Gram-positive amplifier flora, fermentation 5 major categories of flora, more than 80 kinds of beneficial microorganisms. The collection of these genus active principles constitute the principle of the function of the product.
Cuver Island Biological Seafood Generation Preservatives, improves the activity of aquatic product! It can enhance the activity and quality of life of seafood, which can reduce their mortality in the process, extend the time of life! It is because the Green Island Biological Soldering is a Japanese imported stock solution. A bottle of 100 ml of stock can handle 10 tons of water, and the microorganisms are more likely to survive.
Seafood produced preservation agent is very simple, a bottle of 100 ml of stock solution, after 1 L of water dilute, directly throwing into the tragedy water body and mix well, in the truth, the more the stock solution is put on Ok, there is no bad impact on seafood products. But invested more, it will cause traumatic costs. Therefore, there is also a good cost-effective question when used.
100 ml of this stock solution, can be used for 10 tons of water (ie 10 cubic meters of water), 100 m7 green island seafood aquatic products temporary biological preservation agent with 1 liter ( 2 kg) water dilute, can handle 10 tons of water (ie 10 cubic meters of water), one ton of water treatment costs are only 3.8 yuan, which is much cheaper than the price of aquatic preservation products on the market.
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