I find that the food hoppers help A LOT.
I didn't have to refill food everyday like when I had a food dish. The hopper lasted about a week before I had to refill food.
And back when I used a food dish, the rats soiled a lot of food with urine. The hopper prevents wasted food.
I used a big 160+qt(<-- Estimate.I can't remember the exact size) tub for grow outs. It's twice the length of the ones I posted before.
Didn't have any problems when I used it.