FREE GUIDE TO TILAPIA FARMING - PART 2

 Tilapis - a delicious fish to fry , baked and grilled










Pool cross section

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POND PREPARATION BEFORE FISH FRIES RELEASE

1. Drain the water from the pond to prevent death from infection.
2. Remove the mud from the bottom of the pond because it will reduce quality of water. In addition, remove all water plants that do not benefit the fish.
3. Sprinkle limestone on the bed, banks and pool limits. Allow at least 2 weeks in the sun. Benefits of application are:
a. Increase the water pH
b. Hardening the bottom of the pond
c. Eliminate parasitic (disease), an enemy fish and plants are not required.
d. The decomposition process organic matter will increase fertility pond.
e. Accelerate the harden process of excessive sediment organic matter in the water.

Soil pH and type of limestone usage table

pH	below 4	4 – 4.5	4.5 – 4.0	5.0 – 5.5	5.5 – 6	6 – 6.5
	Kg/ha
Limestone, CaMg (CO)	3805	3044	2283	1902	1012	888
CaO2 (Quicklime/ Burnt Lime)	2917	2283	1776	1395	761	634
Ca (OH)2 (Hydrated/ Slake Lime)	1903	1522	1142	1015	507	507

Tilapia pool covered with limestone











f. After the bottom of the pond dry and cracked, water is introduced into the pool

Pool : Driedun till the bottom is cracked













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g. After at least 1/3 ponds full of water, fertilizer applied to fertilize fish ponds in content plankton (natural fish food). Water fertilizer sowing rate by type is as follows

Fertilizer type	Recommended Rate
Phosphate
i.         Double Superphosphate (DSP)	400 kg/ ha/ year
ii.        Triple Super Phosphate (TSP)”	340 kg/ ha/ year
Nitrogen
i.      Amonium Sulfate	80 kg/ ha/ year
ii.     Amonium Nitrate	1,350 kg/ ha/ year
iii.    Amonium liquor	550 kg/ ha/ year
iv.    Urea	67 kg/ ha/ year

h. After the fertilizing process, the pond left for  least two weeks  until the water turns green

Tilapia pond : green color water












i. Then the quality of the water tested to fit the requirements as appropriate as follows:

Parameter	Desired Value
i.    Dissolved Oxygen (D.O)	More than 2.5 ppm
ii.   CO2	Less Than 25 ppm
iii.  pH	6 – 8
iv. Water Temp	20 – 35oC (optimum 28 – 32oC)
v.  Ammonia	Less Than 1.0 ppm

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