I've been breeding Dubias for months now. Started a colony and wanted it stable enough to feed off before I got my cham. Super easy. Water crystals and chow replaced as needed, and oranges and some greens mixed in there. I also use bug grub from
www.thebiodude.com. they go crazy for it, also a really nice gutload. I have a reptile tank heating pad underneath to keep it in the 80s. Then egg cartons placed together standing up. Started with 10 females and 5 males and 100 nymphs. I'm at 100 females and 20 males( I give away extra males 5/1 ratio is best) and 1000s of nymphs. Super easy, they dont get away because they cant fly or crawl on the plastic tub. I was going to do crickets, but my God they smell like a sewer, also they aren't as nutritious and dont hold a gutload for very long.