I just tidied up my electrical "system" a few days ago. I took a board, mounted a small junction box with a GFCI in it, and three short cord power surge limiter 4 outlet strips on it. I plugged the first outlet strip to the GFCI. Plugged two mechanical timers into that outlet strip, and the other two outlet strips to the timers. Then I screwed that board to the back wall of the stand under the tank and plugged the GFCI power cord to the wall outlet. So, now I have about 3 untimed sockets and 4 each sockets on two timers. I have the CO2 timed to come one an hour before the lights, and off an hour before the lights go off. The heater, the filter and the hood fan go to the untimed outlets. The light goes to one timer, and the CO2 solenoid and the Barr Internal venturi reactor goes to the other timer. Maybe that sounds complicated, but it works well, gets the electrical stuff off the bottom shelf and looks much neater, plus every electric cord now has a drip loop. I would never, ever even think of using spade lugs to hook up such a system - not safe, in my opinion.