As far as how it works it depends on the type of wavemaker you are going to purchase. I have a RedSea Wavemaster Pro. It works by plugging up to 4 powerheads into the unit and then choosing a pre-programmed wave motion. You can choose from a gentle, rolling, turbulent or alternating. I'm assuming if you choose turbulent you will have all four powerheads coming on/off rather close together in time rather than say 1 on and three off, 2 on 2 off, etc.. The lights on the front of the unit show when each pump is on. If you have something like a Vortech MP10 you can also choose a similar function but the one powerhead does all of the work. It might come up really strong for 20 seconds and then drop off for 10 seconds at a lower rate and then strong again for 5 seconds, etc.