I could use some advice on my two redfoots.
1. After wintering very well indoors , here in NJ, I am building a large outdoor pen . Can someone tell me what the best substrat would be for the enclosure. Dirt , hardwood mulch,peat moss, just grass etc.? Also I have two Eastern Box turtles. Would it be ok to house them all together ? Or is this a bad idea. Any ideas on these two questions ?

Thanks
V