The pool uses a normal pump, filter and plumbing. This allows standard circulation and filtering methods to be used for the normal circulation tasks.

A dedicated sump pump and filter are used for circulation between the catch basin and pool.

The correct water level in the sump is between the Fill and Pump sensors for operation of the infinite or negative edge feature.
If the water level goes below the fill level , the Infinifill™ automatically adds water until the proper level is reached, so the edge is maintained.

When someone enters the pool or wind blows water over the edge or a check valve bleeds back, the water level will rise in the catch basin. The Infinifill™ will automatically activate the pumps when the water rises to the Pump level. This will lower the water in the catch basin and return it to the pool and the edge will be established again.

When there is rainfall the overall system water level will rise and the edge is lost. When the water reaches the Dump level, water is removed from the catch basin and thus the pool.