also what time do bearded dragons lay eggs in the year
We use the type of styrofoam box in which fish are delivered to aquarium stores and place a thermostatically controlled heat mat at the bottom, with plastic dishes containing damp vermiculite (and the eggs) on a wire rack supported about a third of the way up the box (resting on a couple of half house-bricks!) The boxes we use are the size described here: www.aquamania .uk/product.asp?P. and we make a couple of air holes in the top, and another couple in the sides. We use a humidity sensor to ensure that the levels are appropriate for the type of eggs we're incubating (adding sponge-filled dishes of water will increase the humidity - while increasing number of vents will decrease it) and we also have a long glass thermometer pushed through the lid, with the bulb positioned to give a second visual monitor of the temperature at the same level as the eggs (the first being the temperature controller we use for the on-off control of the heat mat, as that has a digital display and alarm functionality.)
