Construction a pond
- Ponds must be established according to the landscape available.
- A rectangular pond is easier for monitoring fish feeding rate, drainage, harvesting as well as cleaning the bottom of the pond.
- Dike of the pond must be built based on soil type, rainfall situation of the region, heighted needed to avoid floods.
- The crest of the dike must be built to be convenient to monitor fish and feeding, and harvest between the ponds.
- The slope of the dike must be constructed to ensure to resist flooding and waves.
- Toe must be built from the base of the dike to the inner slope for reducing soil erosion from the slope.
- The bottom of the pond must incline no more than 2% to the drainage.
- Male mono-sex culture can be raised well even in 0.03-acre pond.
- The optimum water depth is 1.5 meter and measuring pole should be placed in the pond before filling water to easily determine the water depth.
- Build 3-meter bamboo or wooden bridge in the pond to feed the fish.
- The water inlet and outlet must be separate and thick PVC pipes with the diameter of 3-4 inches are appropriate for inlet and outlet.
- Fence should be built to prevent poaching and entering wild fish to the pond.