Abstract: A system and method for monitoring a fluidized slug in a piping conduit. The system includes a first sensor assembly positioned at a first location of the piping conduit, a second sensor assembly positioned at a second location of the piping conduit, the second location being downstream from the first location, and a monitoring controller. The monitoring controller is coupled to the first sensor assembly and the second sensor assembly. The monitoring controller is configured to receive first data from the first sensor assembly and second data from the second sensor assembly. The first data indicates a first characteristic of the fluidized slug within the piping conduit and the second data indicates a second characteristic of the fluidized slug within the piping conduit. The monitoring controller then generates an indication of a slug characteristic based on the first data and the second data.

Abstract: An aeration and filtering system for an aquarim includes a porous filter bed that is spaced above the tank bottom with pump means located in the chamber defined below the filter bed and having an upper inlet for receiving oxygen-enriched liquid from adjacent the liquid level in the tank and at the same time receiving oxygen-deficient liquid from adjacent the bottom of the tank. These two liquids are then mixed within the pump to provide an oxygen-enriched liquid which is fed through a discharge port that is directed generally parallel to the liquid level and slightly below to provide an exercising environment for aquatic life.