If you have a friend or neighbor you trust, you can always teach them how to feed the tank. I was gone for 2 weeks over Christmas so I needed someone to feed the tank while I was gone. I placed each days worth of food in a section of week-long pill boxes (I feed frozen stuff too), taught her how to defrost it and how to feed the tank (even how to feed my sun coral) even though she didn't have any experience with a tank. The key was I REALLY trusted her and left detailed instructions on how to do everything in addition to the little training session. I came home to a happy and healthy tank. But again as Ace said, if it's only 5 days you don't really need to worry about it. If you want you can always stock the tank with pods before you leave so they have something to snack on while you're gone.