To breed leopard geckos you will need a few things to be successful
-First of course will be at least 1 male Leopard gecko and 1-4 female leopard geckos
-You will also need a 10 gallon tank to keep the male in
-Also a 20-30 gallon tank to keep the females in
-A heat mat to heat the cages
-For the female cage you will need a laying box. A plastic sterilite shoebox will work well with a hole cut in the top filled with damp peat moss.
Step 1: Getting the Geckos to the Proper Size to Breed
Leopard geckos should be around 50-75 grams to be able to breed. Some will be much larger, but this is the recommended minimum.
Step 2: Introducing the Male
To introduce the male you need to be cautious of a few things. Normally introducing a male into an established female tank doesn't cause any problems but you need to be concerned with aggression either way. A little biting is OK and should not be worried about but if you start to realize injred geckos separate them to avoid further problems.
Step 3: Checking for Eggs
Periodically check the box after a few weeks for eggs. You need to make sure to get to the eggs quickly because they can eventually dry out.
Step 4: Removing the Eggs
When removing the eggs you want to try to make sure to not turn the eggs over because depending on how long they've been there you could potentially kill them. Move them to a proper incubation container, deli cups work well. Fill the cups with moist vermiculite. You want the vermiculite to be moist but not too wet.
Tip: It helps to draw a mark on the eggs while they are still in the lay box so you know which side is up.
Step 5: Incubation and Hatching
You will want to incubate the eggs in either a commercial reptile incubator or a homemade incubator. Homemade incubators are cheaper but you will compromise your success. Reptile incubators can be found online for as little as $30.
When incubating you can determine the sex of the geckos by what temperature you incubate at.
79-82 degrees for females
84-89 for males
Don't raise the temperature too high because you run the risk of getting something called "hot" females which are normally very aggressive and will not breed.
After about six weeks your eggs should hatch.
Step 6: Results
If you've followed all of the steps you should now have baby leopard geckos. A female will lay on average 2 eggs at a time several times over a 1 month period, a good female can produce anywher from 2-20 eggs in a single season. Before you start breeding make sure you have the proper fungs and supplies to feed and house this many geckos. Good Luck!