ok alot of people may not agree with me but this works for me verry well. ok i use fish tanks of different sizes depending on hatch. i put a paper towel down on the bottom then cover it lightly with starter grower and put water in there. cover the top with a wire tanktop and use a tank hood with light bulb. i tape a temp probe to the glass neer the bottom. i use cardboard for covers to regulate the heat. the thing works great and the birds cant get out. those little buggers are like flees jumping every where. if you can tell me how to post pictures in a post ill show you the one im using and ones ive used in the past.