IceCap 2K Gyre Flow Pump With ControllerIceCap 2K Gyre Flow Pump with Controller The IceCap Gyre is a unique flow pump that virtually eliminates dead spots in the aquarium by crossflow water movement technology. The pump can be mounted discreetly close to the water surface. The Gyre flow pump controller includes five flow presets: Pulsing, Constant Flow, Stream, Random, and Cycle modes. Equipped with a controller lock setting, 20 minute feed mode, and a night mode that operates at the