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Water treatment and water in grow-out shrimp ponds and settling ponds

Step 1: Get water into ponds through filter bags made with thick fabric to remove rubbish, larvae, shrimps, crabs, snails, insects, or small fish. Stabilize the ponds in 3-7 days.

Step 2: Run paddle wheel aerators continuously in 2-3 days to stimulate eggs of shrimp, snails, insects, small fish hatch into larvae.

Step 3: Kill harmful organisms, sterilize water in settling ponds in the morning (at around 8 A.M.) or the afternoon (16 P.M.) with chlorine with a concentration of 20-30 ppm (20-30kg/1.000m3 of water), or those chemicals allowed to be used in India (not plant protection products and illegal substances).

Step 4: Developing Plonkton by adding organic sources like Jagary,Ricebran.

Step 5:Check pH regularly(morning and evening) and ensure less pH fluctuation

Step 6:Stock after getting good bloom

Managing water color

The use of biological products from reputable companies with clear sources (such as TA-GOLD, Rhodo powder, Pro BCS, etc.), incubated with rice bran, molasses, soy flour, before being released in ponds can control water color.

Combined with using lime Dolomite + CaCO3 with a dose of 20 kg/1000m3.

No. Parameter Unit Allowed values
1 Dissolved oxygen mg/l >3.5
2 pH 7-9, with fluctuation during a day no more than 0,5
3 Salinity per mile 5-35
4 Alkalinity mg/l 60-180
5 Turbidity cm 20-50
6 NH3 mg/l <0.3
7 H2S mg/l <0.05
8 Temperature degree Celsius 18-33


Use industrial feed in the form of pellets produced domestically or imported for shrimp farming. Feed quality has to be ensured a total protein content of 32-45%. Ingredients in feed and feed supplements must be in the approved list to be used in India with complete labels according to policies. Feed should be stored according to directions on the label. Do not use expired feed. In addition, depending on the actual situations (shrimp health, molting cycle, weather, etc.) and observation of the amount of feed eaten when shrimps are at 20 days of age or older to adjust the feed. Avoid feed shortage or surplus, which will affect the growth and health of the shrimp.

How to adjust the amount of shirmp feed

The use of feeding tray is very important to check the amount of feed, reflect the feeding possibility, health, and survival rates of shrimp, as well as conditions at the bottom of the pond.

Feeding tray is usually a net with a square or round steel frame with edges’ height no more than 5 cm. The area of a feeding tray is usually from 0.4 to 0.6 m2. Feeding tray should be placed close to the bottom of the pond, where it is clean and slightly far away from the pond edges. Depending on the area and density, one or more feeding trays can be placed in pond (For farming period, the amount of feed intake and inspection time: see table 6 and 7).

How to feed: Shrimp tends to eat in places that are cleaned by paddlewheel aerator. Thus, provide feed for shrimp where it is clean; avoid feeding in dirty places or near edges of the pond.

Check the feeding tray How to handle the next feeding time
If shrimp eat all the feed Increase 5% the amount of feed for the next feeding time
If the feed leftover is 10% Keep the same amount of feed
If the feed leftover is around 11 - 25% Reduce 10% the amount of feed for the next feeding time
If the feed leftover is around 26 - 50% Reduce 30% the amount of feed for the next feeding time
If the feed leftover is more than 50% Stop feeding the next time

Pond management

Dissolved oxygen (DO), pH, turbidity should be measured daily; alkalinity and NH3 should be measure once every 3-5 days.

PH and alkalinity are two important factors affecting the life of shrimp. When pH and alkalinity change outside the optimal range, they will greatly affect shrimp.

To control low pH, manage water color and create algae appropriately to keep the level of turbidity from 30-40 cm. During the breeding process, if pH is smaller than 7.5, use lime (CaCO3, Dolomite) at a dose of 10 - 20 kg/1000m3 of water.

To manage high pH (> 8.5), Use pH buffer 1kg/100akr along with Jagary.

To manage low alkalinity, use Dolomite lime 15-20 kg/1000 m3 at night or soda (Sodium Bicarbonate) 20ppm until the level of alkalinity is satisfied.

To manage high alkalinity, use EDTA 2-3 kg/1000 m3 at night.

Periodically use agricultural lime CaCO3 each 10 days at 20:00-21:00 PM with doses ranging from 10-20 kg/1000m3. Depending on the salinity, adjust pH appropriately (based on the actual situations of pond environment to adjust the amount of lime used accordingly).

If salinity is under 17%, pH should be from 8.2 to 8.4;

If salinity is above 17 %, then adjust pH to 8.0 to 8.2;

If salinity is equal to 25 %, adjust pH from 7.7 to 7.8.

If a sudden drop in salinity due to raining, pond environment must be adjusted by sea brine (salt water) or additional salt grains.

In somecases if bluegreen algray develop more will results high pH fluctuation and DO fluctuations,which is lathly to shrimp use B kLEEN Brto reduce blugreen algray without any sideeffects to the shrimp.

Periodically applied B Kleen Br according to

The first month:

Keep appropriate water color in pond (Chartreuse color) and stabilize environmental indicators, such as pH, alkalinity, temperature, dissolved oxygen, etc. Avoid algae in the bottom of the pond or excessive algae growth.

The second month:

Keep water color appropriately ( brown, turbidity,Light Green). Water depth should be about 1.4 to 1.8 m to slow down the fluctuations between day and night of temperature, dissolved oxygen, and pH to not shock shrimps. Applied Toxi Guard to reduce Ammonia,Nitrate ,Hydrogen sulfide.

Once every 20-25 days, treating water and pond bottom with B Kleen Br in the directions that the manufacturers instruct (e.g. Eco Pro, BIO POWER, etc.).

Use paddle wheel aerators and aeration to supply oxygen from 19:00 PM to 5:00 AM the next morning.

During the farming period from 20 to 60 days old, supplements,ishrimp,addmin & white GM can be mixed into feed under the guidance of reputable manufacturers to increase resistance for shrimp (e.g. Sanolife, calcium, magnesium, etc.)

Swach White GM will control white Muscle and white got disease.

It takes care on hepatopancrease and help the shrimp for better digetion and assimilation.

RMS(Running Mortality Syndrome) will reduced by using using Swach White GM.