I travel a lot. What I do before I go for a week or 2 is make sure my water changes have been done. Usually 25% a couple of days before I leave. I normally remove all the mechanical filtration just so I don't have to worry about anything getting clogged, and I don't need to rely on someone to clean them. I put into individual baggies the food that needs to be fed for each meal, and label the bags for the day and time to be fed. I also keep plenty of RO water on hand for topping off the tanks. I put a peice of tape on the sump that marks where the water line should stay. Of course I have someone stay at my place when I'm gone, so there is someone there most of the time. Also I leave a few phone numbers of some other tank owners, that I trust completely, in case of a tank emergency.