I bought a pair of @Reefbrite 72" LumiLite Pro's and the Apex Dual Channel Interface. I programmed everything perfectly on the Apex/VDM/Profile and installed the lights and channel interface per the manufacturer instructions. Here is the pertinent portion: "Simply plug the interface inline between any Reef Brite™ LED unit and power supply, then plug the RJ45 cable into any available VR port on your APEX™ system." Also from the Quick Start Instructions Basic Set Up: "The interface plugs in between the XHO/LumiLite Pro/LumiLite and the power supply." Sounds good so far but WAIT there's more... the lights wont ramp up or down on either fixture. I checked wiring and verified against the manufacturer instructions and all the lights would do is barely turn on and occasionally flash. I checked and double checked Apex programming and no change. I spent the next day banging my head against the wall until it hit me... the inline dimmer switches that came with the fixtures... those are removable; and should be discarded when using the apex channel controller.