Shrimp is an omnivorous animal. Under normal circumstances, they will eat algae and aquatic plants in the water body, and will also eat some mollusks. Some freshwater shrimps also have the phenomenon of eating fish feces, such as Luo's shrimp, but they are not specifically feeding on it. Usually, fish stool still needs to be removed by filtration or water change in time, or it can wait for it to be decomposed by heterotrophic bacteria, but it will produce some toxic substances such as ammonia nitrogen, which need nitrifying bacteria to transform.
1. Strengthen the filtration: If there is a lot of fish feces in the fish tank, it is necessary to clean it by strengthening the filtration. Usually choose the frequency conversion three-in-one pump, and then shorten the suction port, so as to increase the suction. If the fish excrement is in the corner of the fish tank, you can open the oxygen port beside the pump and close the oxygen nozzle above, so that the water flow can wash the fish to the suction port, so that it can be cleaned up.
2. Water change and cleaning: If there is no particularly powerful filter in the fish tank, it can only be cleaned when the water is changed at ordinary times. Generally choose siphon method for water, so that the bottom of the water tank can be extracted, together with fish and so on are cleaned up. Then from the upper part of the fish tank, the new water is slowly poured into the old water from the tank wall.
3. Biological decomposition: If there are not many fish, completely wait for their natural decomposition, but before that, the nitrification system must be established. Because decomposing fish will lead to an increase in the number of microorganisms, water quality is easy to become turbid, while increasing the content of ammonia nitrogen in the water body, which is harmful to fish, but with nitrifying bacteria, these problems can be solved.
