Well for starters you need a male and female. DUHH!! I use plastic sterlite boxes that I get from wall-mart to house all of my geckos. They are inexpensive and can house 5 adult geckos. I leave 1 male in with 4 females. The bins are approx 48x24x24 and work just fine. Just make sure to drill lots of holes in the lid. Then I go to the dollar store and buy fake plants and drill holes in rocks. Then I glue the plants into the rocks with hot glue. My set up looks like this:
Paper towels make the best substrate. They are cheap, easily replaceable, easily disposed of, and dont posses and threat of impacting your animal.
My nest boxes consist of a mixture of 2/5 peat moss, 2/5 coconut fiber, and 1/5 sand by volume. Then I sift that and use the fine stuff that I sifted out throwing away everything else. THIS IS A GREAT MEDIUM AND I RECCOMEND YOU TRY IT!!
Males are sexually mature to breed at 25 grams. Females however should not be bred unless they are 35 grams. (30 for tailless) A new female might produce infertile clutches of eggs for the first few months. Many of my geckos do but dont worry this is common. Just give her time.
If you fed your geckos right and have done everything properly then every 25-40 days your females should lay 2 eggs. Young females may lay only one for their first clutch. When you collect the eggs you want to make sure not to disturb them. The yoke attaches itself to the top of the egg and you want the egg to remain like that when incubating. I use an X to mark the top of an egg.
Here is a method that dates back hundreds of years that will able you to tell the top of the egg. Its called candling. All you do is take a flashlight, like a maglite, and turn it on in a dark room an put the egg on top of it. The yoke should be at the top, like this:
That red circle inside the egg is a yoke. This is also a way to tell if an egg is infertile as infertile eggs have no yokes.
Many many people ask me how I tell if eggs are fertile or not. Its so simple its not even funny so I will post here how to tell.
This is an example of a FERTILE EGG!!! I marked the top of the egg with an X to so i dont rotate it. Notice how the entire body is white and it is plump and healthy looking.
This is an example of an INFERTILE EGG!! Notice how its all moldy and unpleasing it is to look at?
My rule for incubating eggs if your unsure goes as follows: INCUBATE EVERYTHING!! If you cant tell at first you will most definately be able to tell in a month.
I use 1:1 ratio of perlite and water by weight to incubate the eggs. Temperature should range from 70-75 degrees for incubation. I use once again a plastic shoebox to incubate the eggs. Its a dollar and holds like 20 or so eggs. If you have done everything right, your hatchlings should come out in 75-120 days.