Automatic adjusting device for water quality of fish tank

The utility model discloses an automatic adjusting device for water quality of a fish tank, which relates to the technical field of intelligent cultivation and comprises a shell, a network expansion board, a relay, an OLED (organic light emitting diode) screen, a signal sensor, an arduation integrated board, a user terminal and an execution device. The network expansion board, the relay and the arduon integrated board are all located in the shell; the relay is connected with the execution device; the OLED screen is located on the side face of the shell. The signal sensor is arranged in the fish tank; the arduation integrated board transmits signals to the user terminal through the network expansion board; the water quality of the water tank is detected in real time through the signal sensor, the relay is controlled by the arduon integrated board according to the detection result to complete water circulation, and when abnormity occurs, regulation is performed by dosing to ensure the states of fish and water i