Movement Synchronized Simulating natural water currents found on coral reefs, eFlux controllable wave pumps provide tank wide circulation, improving water quality and promoting strong coral growth and fish health. Running virtually silent, they use safe direct current (DC) and are completely controllable, generating multiple modes of water flow for any size reef aquarium. Flow modes include: WAVE PULSE MODE * Simulates pulsing wave action. Adjustable from 0.3to 7.0 seconds, flow adjustable from 0% to 100%. SURGE/GYRE MODE * Simulates surging water currents. Adjustable from 10to 90 seconds, flow adjustable from 0% to 100%. STREAM/STEADY MODE Produces a steady flow of watercurrent. Adjustable from 0% to 100%. FEED MODE On-demand feed mode turns pumps off for 10 minutes for coral and fish feeding. *Add an additional eFlux |