Well first off you should only have two females or one male and one female (two females are the best combination), two males will fight and often kill eachother. Two leopard geckos can live in a 10 gal. tank, but it is highly not recomended. You should go for 15 or 20 gal. (or bigger) but remember... when it comes to something like this bigger is always better!
You need a 20 gallon (long). It is about 3ft long & 1ft deep.
leopard geckos would love it in a 20 gallon tank, i have had a few and they get about 12 inches or so long and a 20-30 gallon tank is perfect for them
Leopard geckos should be on a 12 hour light cycle.
Fully grown leopard geckos are about 9 inches.
They can grow up to about ten inches.
either a 15 gallon tank or a 20 gallon tank
Males are very territorial but besides that as long as your geckos have enough space they'll be fine.
8-10 inches, if they are really big
30 years or more
well baby beardies like to climb on each other and their long claws could damage the leopard geckos skin. so I wouldn't
Leopard geckos cannot live with panther geckos. Even though care for both are generally the same, there are some huge differences between the two. Leopard geckos are usually between 7 and 10 inches long (some almost a foot), and panthers are 4-6 (or occasionally up to 8) inches long. This size difference alone could do it. The Leopard geckos would pick on the panther geckos. Also, the climate of the two needs to be very different. Panther geckos live in southern Madagascar naturally, while Leopard geckos live in Afghanistan and neighboring countries. Panther geckos need higher humidity levels than Leopards, and lower temperatures. Together, either the leopard gecko, or the panther gecko, will suffer, if not both. Please, don't keep these two creatures together. It won't work out well.
For just one leopard gecko, a ten gallon tank is fine. For two, ten is OK, fifteen is good, and twenty is ideal. Add around five to ten gallons per leopard gecko for a comfortable living space.