Hi there
Thats awesome that you are getting a pixie frog! i would feed him the calcium suppliment once a week and feed the frog about twice a week if he's still a froglet. Once he is larger, you can feed roaches and if you can stomach it, mice. I would use a 3.0uvb because that seems a little hot, and/or a heat lamp because pixie frogs like some heat, but nothing too hot. The frog would need a max of 20 gallons but only if you think he/she needs the space, a 15 gallon should suffice for one. the substrate can be cocoa fiber and have a large waterbowl, a cat litter box would be good for one.

Good luck with your pixie!