About the problem of raising fish in straw tanks, please enter the master! !

1. Up-filtration doesn't mean that you can't raise grass, but the effect is poor. It is even better to use waterfalls to filter and raise grass. In addition, the aspect of reducing CO2 loss can be ignored, because CO2 is not intended to be added, and the photosynthesis of aquatic plants is provided by CO2 discharged from fish, and the effect can be ignored.

2. Heating rods have little effect on aquatic plants. Unless there are leaves directly attached to the heating rod, the water flow will soon transfer the heat away.

3. The straw tank does not need to be filled with oxygen, and the oxygen in the straw tank is mainly provided by aquatic plants. Generally, CO2 is added to the straw tank during the day, so that the aquatic plants can release oxygen through photosynthesis, and CO2 can be stopped at night. If the amount is small, for can be added for 24 hours. Of course, the lights should also keep up, otherwise the light is insufficient, aquatic plants can't carry out photosynthesis, and fish may suffocate. Moreover, the density of fish culture in straw tanks is relatively low, and the density of fish culture is maintained at 1 liter of water 1 cm. In this case, there is generally no lack of oxygen.