a big difference might be if you give them the food in the tubs or not, for most of mine its on top of he hardware cloth, it really cuts down how much they waste
Yeah it would be on top of the hardware cloth, I plan on building a rack with concrete mixing tubs, it seems to be a pretty common design as I keep seeing them everywhere. I've figured one of those to cost between $125-$150 including an auto watering system.