Novel fish tank bottom filter circulating equipment

The utility model discloses novel fish tank bottom filtering circulating equipment which comprises a fish tank, a filtering box body is arranged on one side of the fish tank, a filtering cavity and a water storage cavity are formed in the filtering box body, a filtering cylinder is arranged in the filtering cavity, an inverted-U-shaped siphon is arranged in the fish tank, one end, located outside the fish tank, of the inverted-U-shaped siphon is communicated with a water injection pipe, one end of the water injection pipe is communicated with the filtering cylinder, and the other end of the water injection pipe is communicated with the water storage cavity. The water injection pipe is provided with a PVC ball valve, a disinfection chamber and a driving chamber are arranged in the water storage cavity, a water outlet is formed in the lower end of the filter cartridge, the water outlet extends into the disinfection chamber, a submersible pump and a backwashing water pump are arranged in the driving chamber, and