to dig the fish pond to a depth of 2-3 meters, so that the water body can be stratified, so that the fish can be intercropped and the economic benefits can be improved. It should be noted that although the fish pond is relatively deep, the water depth can be changed appropriately, for example, in winter and summer, the water can be a little deeper, so as to avoid the water temperature changing with the temperature, keep warm in winter and cool down in summer. In spring and autumn, in order to promote development, it can be raised in shallow water.
of deep fish ponds? 1. Dissolved oxygen decreases: If the fish ponds are too deep, the dissolved oxygen will decrease. Although more water can hold more oxygen, the situation in deep water is different from that in shallow water. The oxygen content in deep water will be lower, which is very dangerous for some bottom fish, and will also allow anaerobic bacteria to grow in large numbers.
2. It is not easy to control the temperature: if the water is shallow, the water temperature changes faster, so it is relatively easier to control the temperature, but the water depth is different, the water temperature of the upper layer rises, the lower layer remains unchanged, which will have some impact on the rapid growth of fish, so that the fish in the middle and lower layers are not easy to eat, delaying the development.
3. Waste of water: If the water in the fish pond is too deep, a large amount of water will actually be wasted, but usually the fish pond dug by hand will not encounter this problem, because it is rare to dig to a depth of about 4 meters, usually 1.5 meters, so the waste of water is very small.
