So who still uses them, and how do you control ? I have one I got from a vendor here a few years ago and it still works but the light sensor never really worked well so it runs most of the time on high. I would like to control it or at the least find a new light sensor. Can my rk lite control it with the pump module and apc? If it will, could it let me customize how it runs like wave, random modes, etc? I don't have the pump module or apc but am considering. Is it really worth the cost? I may also use it to Control my Speedway DC return pump but am unsure. Let me know what you know?