Esquare
Active member
I wanted direct control from my pc and the RK only allowed you to view the various aspects of the system and not change them. The aqua controller allows direct control of the controller from your pc, which fit in with my penchant for controlling everything I can from my computer. Other than that, the RK may have been a better deal in terms of a basic setup. Check out the Neptune forum and you’ll get an idea of what the AC can do.