I've used that same unit, and other than the humidity issue, it worked very well. With flake food, it was only good for a couple days before the humidity got the flakes sticking together and sticking to the unit. With pellet food, it started sticking a little after 4-5 days, but it would still get at least half the food into the tank on most occassions. Realize that it's also kind of big, so make sure you're going to have space for it.