Keeping rabbits in a colony is a fantastic, natural way of raising rabbits. The only problem I have really encountered is their love of tipping their bowls over.
The solution I have found is to make a J feeder and to make a hay rack for the rabbits. I also made another bin dispenser for the rabbit’s alfalfa chaff (chopped up hay).
We feed our rabbits a natural diet and that involves quite a lot of grain. We do not feed pellets, but these J feeders would work really well for pellets as well.