The vortech's now have a wireless controller that performs that function. you basically buy a vortech (or 2 in my case

) then buy the upgrade for $100 each. they ship you the controller, then you replace your driver, and send the old one back. they then credit you $50 for each one you send back. They sold out of the first production run, and the second is supposed to go on sale this week..... I am just waiting to order 2 upgrades at this point.
here is a blurb from the Ecotech marine forum here on RC about the wireless controller. the full thread is here.
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1185310
What does the Wireless Wave Driver do?
Well, in short it is a multicontroller. That’s right, the driver that you thought you required in order to use our future multicontroller actually IS our multicontroller, but it’s also our single controller. How’s that you ask? Well, using our new Triton Protocol for wireless communication your Wireless Wave Drivers will communicate with one another to coordinate wave movements throughout your tank. For example, if you own four pumps you will purchase four Wireless Wave Drivers and your pumps will then be capable of multiple different wireless wave control algorithms and infinite flow possibilities. Alternatively, if you just have one pump then you can purchase only one Wireless Wave Driver and still get all of the flow control options, just minus the added benefit of having other pumps. What’s even better is that there is effectively no limit to the number of different wireless pumps that you can incorporate onto any one aquarium, or even multiple aquariums.
Here’s how we do it:
When you turn your first Wireless Wave Driver on, you have the option to set this pump as a “master pump.†Once it’s set as master, any other pumps that you turn on will automatically become slaves to that master pump. A master pump can broadcast a wireless signal telling slave pumps to coordinate their flow with the master. A master can control other pumps in the following modes:
• Single Speed Mode
• Random Mode 1: Lagoon Mode
• Random Mode 2: Reef-Crest Mode
• Pulse Mode- for wave creation
Here’s where it gets even better:
The slave pumps can be set to either “Sync†with the master pump or “Anti-Sync†with the master pump. In sync mode the slave will do exactly as the master; in anti-sync mode they’ll do the inverse! Meaning when the master pump is at its maximum speed, the slave will be at its minimum, etc. Multiple master pumps can be set up on different wireless frequencies for infinite wave control possibilities.
To enter feed mode, press the button on any one of your Wireless Wave Drivers and all of your pumps will slow down to just a few revolutions for 10 minutes.
Each Wireless Wave Driver comes with its own 1-year warranty from the time of installation.