I currently am having issues with my RK II. I purchased it new directly from Digital Aquatics back in June of this year. After a month of operation I started having problems with interference from my MH electronic ballasts. My PH probe would go haywire anytime my lights would be on. Also, my MH would shut down randomly... I think it caused one of my ballasts to go bad. I had to contact Hamilton Tech to send me a replacement ballast. Turned out there is a known issue with the power-strip module that Digital aquatics knows about... so they sent me a new power-strip with the fix and everything was fine for about 5 months.
So about 3 days ago my MH started shutting down randomly... different channels each time. There seems to be momentary loss of power that is causing my MH to shut down about every 45min to an hour. It happens so quick that the control module does not even reset. It maintains the channels on like nothing ever happened. Nothing in my set-up had changed, so I thought maybe there was local power grid issues. Three days later I'm realizing that's not the problem. I took the MH off the RK II and have them on a regular power-strip and they are running with no problems... so I know the interference is in the RK II power-strip.
I run one MH on channel 4, one MH on channel 8 and one MH on the expansion socket plugged into a different circuit with the control wire plugged into channel 6. The Power compacts are on channel 7. I also noticed that when it occurs I hear a noticeable lowering of the sound pitch of my fans... so it seems that all channels experience the momentary power loss. The Power compacts don't seem to be as sensitive to the power glitch as the MH, because they do not shut down during these occurrences.
I have emailed Digital Aquatics and am awaiting their response...
