Hi guys ive had 5 leopard gecko's Three have died With the Big female leopard gecko but i dont think she bullied them i think the other three were just Very sickly ones so about a year ago i bought a small male he was only probaly 3-6 months old and my female is about 2 years old and i am moving to a smaller house so im planning on Putting them together in a 20 gallon tank together for lack of spacemy male is much smaller then my female And He hasnt been with any leopard gecko's his whole life how should i introduce them?