So, I have 2 kids

. One cannot handle any high sugar veggies, pretty much nothing other than parsley. Do you have any suggestions on other veggies for him? Also, should I be separating them and feeding the other a mix of veggies? This just seems like it would be a pita, but if it would be better for her than I will give it a try. (Just as a background, they get free feed hay and water, and 1/4 cup of pellets in the morning and night).
Also, what do you use on the floor of your pen? THey are on linoleum right now, cause the grass mats I had were chewed to bits...they lasted a week!