Reason: When most people raise fish, they will encounter fish with various diseases. Most of the root causes are caused by temperature and water quality. Although the bottom filtration is troublesome, it is in line with the characteristics of aerobic and photophobia of nitrifying bacteria. In principle, the bigger the bottom filter, the better. The minimum weight of bottom filtration is 4: 1. This will provide a strong hardware guarantee for your long-term fish farming in the future.
As for the noise problem you mentioned, there is little experience in this field on the Internet, which is also one of the most troublesome problems in the later period of fish farming. After two years of tossing, my bottom filtration system was completely replaced by silicone hose (the connecting valve was PVC), and Sensen 25W variable frequency mute water pump was also used as the water pump (frequency conversion is nonsense, I took a fancy to his mute effect, and its service life was only two years, so I have already used the second one). The silicone hose absorbs the vibration and noise caused by the water pump well. Only when the night is quiet can you hear a little sound. Furthermore, controlling the length of the downspout after fish tank filtration, 3mm deep into the horizontal plane, can occasionally arouse a small amount of blisters. And the water flow can be kept in a quiet range. The last noise source is the vibration of the fish tank cabinet. If there is a lot of space in the cabinet except the bottom filter screen, you can lay 10CM high-density filter sponge in the blank of the inner wall of the cabinet, and the sound absorption effect is obvious. There are fish tanks in my living room and bedroom, and the noise elimination is satisfactory. The lighting is controlled by a timer, the water is changed every week 1/4, and the water pump is turned on 24 hours.
It should be noted that raising fish is not something that can be done well by buying everything. In the circle of friends, it is difficult for people with weak hands-on ability and analytical ability to raise fish for a long time. Be prepared for this.
The above methods to eliminate noise need to be modified by ourselves, and materials can be bought on Taobao. Don't imagine that the finished fish tank can guarantee everything, because the people who design and make fish tanks probably haven't raised fish at all, and they are more concerned about appearance and profit.