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

Feeding

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.

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