1. When diving the water pump into the water, the water level is higher than the pump.The low level of the water will cause the temperature too high, so the noise of the pump will be large.
2. Land use need to allow water to flow into the pump (non self priming pump), the installation of water level higher than the pump.
3. To keep the water clean, so as not to block the pump rotor. the pump should be cleaned regularly to keep the pump clean.
4. There may be 1-3mm of size deviation due to manual measurement.
5. There may be a little color difference due to display pixel and light.