Its the most simple wave control out. Which is not to say that its not good. Im picking one up soon. It has 2 plugs but with a splitter/multi outlet you can put many more on it! I love the flow on the koralias! For the money its the best
Make sure you use the Evolutions Koralia pumps. The old Koralia pumps make funny noises when they switch on. They startle the fish. Otherwise they do a good job. You can dial the amount of time you stay on each pump.