Don't laugh but this is the electrical system I have to plug everything in I bough a really expensive surge protected multi plug as the main and it has a 6foot extension on to plug into the wall the main multi plug had individual switches.
I will plug all the lights into one multi plug and all the heaters into another and the filters into another and with one switch I can switch off all the filters or the other switch all the heaters.
SANY0092.jpg picture by Mrfastfossil - Photobucket
SANY0091.jpg picture by Mrfastfossil - Photobucket
My fish are trained so when the filters go off they know it is food time. I do this so the flake does not get pushed around and I can remove uneaten food if needed.