I ordered this online based on the 3 reviews on this site and must admit it wasn't easy to find. I first tried to set it up, loaded it with food, then the top just fell off before I secured it in place, dumping a ton of food into the tank. So I decided to retry this morning. After I used some duct tape to secure the cover, I reloaded, then set it for what I thought would be the "correct" amount of pelleted food for my 55 gallon tank (the "halfway" setting), and it proceeded to dump too much into my tank. So I fiddled with it again (tested it in my hand) and found that only the first three "click" settings dispense a small amount of food, and every other setting dispenses WAY too much, and they're not consistent!! Sometimes, one setting dispenses more, sometimes less. I bought it so that the people watching my house during vacation don't have to feed these fish, but I just don't trust this thing NOT to screw up while I'm gone. It's going back tomorrow. Anything that requires duct tape right out of the box isn't worth my money.