Thanks for the feedback so far. I have bought all new modules, including the comm. My unit is the Aquacontroller Pro. I am running a 180, 72, and a 155 gal tank all in my living rm, with a 200 gal sump system below in the basement, so I have plenty of pumps running, mostly Koralia 4's though. The 72 is next to the 155 running on it's own sump with a Mag 5, but that is soon to be put in line with the 155 and basement sump system. I ran new circuits for this, 1 at the 155, and 1 at the sump system, I even put them on the same phase in the panel. For some reason, with the comm. unit plugged in downstairs, I could control my frag light, also downstairs flawlessly, regaurdless where they were plugged in, but nothing upstairs would respond. I ran a phone line ustairs so I could plug the comm module in right next to the light controls and it's responding, but the lights have gone out on there own briefly a couple times today........................Thanks again for the feedback, I was ready to abandon it all and go with timecllocks again.