Can I use the LevelSmart if I have a pool cover? June 15, 2022 21:17 Updated Yes, the LevelSmart will continue to fill with or without the pool covering. Related articles How does the LevelSmart Sensor attach to my pool or spa? What power does this unit require? How does the Sensor communicate with the Valve Controller? Can I use there LevelSmart with an negative edge pool? Does there need to be a check valve on the supply line?