WOW, thanks for all the great replies/ideas. There is really no one to come check on the tanks while we're gone. I'm going the extra feedings and water change route. I'm picking up timers today for my lights because I figured my plants couldn't go a week without lights and leaving them on 24/7 would have been an algae nightmare. =D I'll throw a harder type veggie bit into the pleco tank and the 2 other tanks that have snails (2 smaller apple snails in one and nerite in the other) the morning we leave.