The cement fish pond needs to soak for 15-20 days to raise fish.The reason for soaking for so long is to remove the cement alkali in the pond, which can reduce the dissolved oxygen in the water and is harmful to the health of the fish.During soaking, it is better to change water every 2-3 days to prevent alkali saturation in water, so that soaking time is no longer effective.
1. Choose the right fish: If you raise fish in cement ponds, you'd better choose some species to watch the back, and don't raise tropical fish, because it's not easy to control the temperature.Usually to raise goldfish, koi, small fish can choose to watch back medaka, these fish on the temperature of the adaptation range is relatively wide, and the diet is very complex, so easy to raise.
2. In addition to net alkali: It is necessary to remove alkali when raising fish in cement ponds. This has been mentioned above. In addition to removing alkali by soaking, acidic substances can also be used to neutralize, such as vinegar or ice vinegar. 0.5 kg should be put per cubic meter.Alum can also be put, it will become alkaline after dissolving in water, thus playing a neutralizing effect.
3, raise the water: fish must raise the water in advance, the water is good or not related to the health of fish.Generally, the water used for fish farming is tap water, because it contains residual chlorine, so it is better to dry it and then use it.After the water is dried, it is poured into the pond and left to stand for a few days before putting fish in it.
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