EASI-Dose 3 Channel MasterEASI Dose Channel Master 3 *High precision, programmable dosing system for accurately dosing supplements and or feeds in both freshwater and saltwater aquariums. *Compact design incorporates 3 independent, controllable dosing pumps. *Built in communication capability allowing the dosing master system to be upgraded and integrated with future technologies ( additional equipment required not supplied ). * Digitally adjustable for accurate and reliable