This is a good explanation
The VorTech MP40W Pro Wave Motion model features the Wireless Wave Driver. This intelligent controller allows wireless operation of multiple, programmable wave modes (constant, lagoon random, reef crest random, short pulse, long pulse, and feed mode) to create custom wave motion in your aquarium. The Wireless Wave Driver also allows the serious reef enthusiast to control up to 10 VorTech pumps for the ultimate wave motion system. 1,000 and 3,000 gph. For aquariums between 40 and 500 gallons
NEW VorTech MP20 features 4 basic operational modes (constant, lagoon random, reef crest random, and feed mode) and is for aquariums between 20 and 70 gallons. 500 and 2,000 gph. The MP20 can be upgraded to the MP40W with Wireless Wave Driver Upgrade.