I was also curious to know if a couple minutes here and there would hurt,i assumed it wouldn't since everything looks fine.
I bought one of those Brinks® push pin mechanical timers about a year ago from WM,it works but it's doesn't wanna go off and back on right at 12/12 like it use to,or i never payed attention. Latley i've been looking for a digital timer and found one for only $19.95 and $4.95 shipping. It's the SunDial2 Dual Digital Timer also under the name, Eco Plus Dual Digital Plug-In Timer, if someone else is looking for a timer, check it out at AquaCave dot com.