1. What is the best egg-laying substrate?
-When my Beardy layed eggs I kept her in a rubbermaid containor with about 8 inches of moist vermiculite/playsand.
2. What is the best egg substrate for when they are in the incubator--vermiculite?
-Yes, that's what I'm useing 
3. Where should i breed my drags? in the cage on the floor..?
-I first introduced my pair in their 5 foot cage but separated them immediately because when the male grabbed the female by the neck he would smack her head into the side of the cage and I thought he was gonna snap her neck! 
I have found it better to introduce them on the floor...
4. whats the avg time for gestation and hatching rate for beardies?
-umm, my beardies mated the second week in April and the female layed eggs on May 14th so I think that's around 3 weeks or a month.
**5.**--If i bred my beardies...lets say...in one week...when do you think the babies would hatch? (haha dont you love math.,, )
lol, actually I HATE math... heehee
ummm, after your beardies mate it'll take about a month untill the female lays and the about another 2-1/2 months untill the eggs hatch.
Hope that helped a little... ttyl and good luck! 
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-Lauren 