- Pond area: 2.000 – 5.000 m2
- The pond banks are, do not leak, keep the water level in the pond stably. The right bank side is higher water level in the pond and should be at least 0.3m.
- There are water inlet and outlet sluice separately.
- The input water source must be available and not polluted
- Water depth: 1,5 – 1,8 m (level of water 1,2 – 1,5 m)
- pH of pond bottom > 5,5, pH water: 7,5 – 8,5
- The dissolved oxygen: 4 – 9 mg/l
- -S‰: 5 – 30‰
- Soil Characteristics: Can be fed all kinds of pond bottom, sand of pond bottom is the best, sand of mud or gravel sand. The pond bottom is not leaking or osmose to the contrary. The transportation convenience and electricity for production.
Pond System Setting:
- The pond is built between the water inlet and outlet ditch.
- If the pond is built near the seaweed growing area, it is very good to turn over the water into a closed system with a pump of rotation.
- The pond bottom is higher than the ditch bottom at least 30 cm, the slope bottom is slightly incline toward to outlet sluice.
- If the pond bottom has a high acidity, a lot of organic matter, or the new land is putted into use from the mangrove forest, etc., use some materials to reinforce the pond bottom to have limited ability to create NH3, H2S. … and suspended organic matter.
- The pond bank is higher than tide level and is highest 30 – 50 cm. The dimension of pond bank is enough wide and convenience for traveling and delivering food, equipments…
- Ponds are set up with water inlet and outlet sluice separately. The outlet sluice is lower than the pond bottom about 20 – 30 cm.