I decided to give the flow in my tank a little upgrade, I had been using 3 modded Tunze 6025's and a 6045 which worked great, but was somewhat static. I did have one of them on a timer, but they really arent designed for that. The Aquasurf is a VERY cool little piece of equipment, probably one of the best things Neptune systems could have added to their line. Less expensive than the Tunze multi-controller and the fact it is run by my AC3 is great. Fairly simple to program and very versatile. I am still messing with it, but have created a fairly good wave for daytime and set up a calmer, oscillating mode for nightime. The 6055's are also great, just like the other nano-streams, small and quiet. Kind of a pricey upgrade, but I am very happy the setup.