Automatic feeders are a smart choise, neighbors always overfeed, I left for 2 weeks and I asked a neighbor to feed the fish in my 125 (wich before I left was crystal clear because I did a 75% water change), and guess what, when I came back the tank looked like coffee, this was over a month ago and most of the fish in that tank are still over wheight even though I've been feeding them extremely sparingly ever since I came back. Unless your neighbor or friend keeps similar fish that you keep and takes good care of them, automatic feeders are the way to go. In my opinion automatic feeders are god's gift to fish keepers.