When housing leopard geckos you need to provide at least a 10 gallon tank for one leopard gecko and a larger enclosure for more.I use rack systems for my leopard geckos because they are great for housing over 20 or more geckos. You can purchase a rack from vision or animal plastics, like I have done. Make sure you don't place you tank or rack in direct sunlight because it will kill your gecko[s].
When heating your leopard geckos enclosure you need to provide a warm side and a cool side because leopard gecko[s] thermo regulate their body. The warm side should be around 85 to 90 degrees and around 75 to 80 degrees on the cool side. If you are using a rack system for your leopard gecko[s] make sure you have it hooked up to a thermostat,because if you don't it will over heat and kill your gecko[s].
There are a few substrates you can use for your leopard gecko[s] including paper towels,newspaper,slate tile,and sand. I use paper towels because they will not harm your gecko[s] and it's easy to clean out. Sand has been known to cause impaction,that will kill your gecko[s] if it is not surgically removed right away and can harbor parasites.
When shedding you should provide your leopard gecko with a moist hide so that they can shed their skin properly without any complications. If your leopard gecko has any skin left on the toes or body you can put your gecko in a shallow dish of warm water for 10 minutes(without leaving your gecko) and then remove the skin with a pair of tweezers.
When it comes to feeding your gecko you can provide them with a variety of foods including crickets,roaches,meal worms,silkworms,butter worms,and pinki mice for breeding females only because they are high in fat. Make sure to dust their food with calcium 4 days a week,calcium D3 1 a week,and vitamin and minerals 2 a week.