Not sure any "timer" can do what you are asking. You just need to buy a wavemaker. Depending on your budget and desired wavemaker features, there is a simple power strip device made by Aquarium Systems called Natural Wave ($55 at MarineDepot) or the more advanced Wavemaster Pro from Red Sea ($110 at Marine Depot). There are other regular timers, including the Coralife Power Center, but they only work at 15minute intervals or greater.