housing a leopardgeko

Question
Hi tommy this is roger how are you going today as for me I am going fine.I  have some news I found the leopard gecko I want to buy it is a blazing blizzard young adult 6" to 7" I like the morph color pure white wow he is cute.anyhow her is my second question I am also goning to perchase a 40 gallon glass aquarium black and a wooden stand that goes with it too at the petco store wher I live near at it seems that they had a 20 gallon long but the size was only 24"x12x12" and I sew it and didn't have enough room to put like a hide den and other stuff that he needs but there was this size tank 40 gallon= that measures 36"Wx15"DX16" a that looks more better room for him.you see just by calling you them shop where they sell reptiles they tell you that a 20 gallon long is right for 1 leopard gecko but when you go to cheh out for yourself to see the sizes the have their it is diffent then what they tell you to buy cause a leopard gecko does need more to stretch out and his hide den I want to buy him but I don't no which size to get for the 40 gallon ther are 3 size at herpssupply.com at the products section when you chick on it can you tell which size to buy.1.XL = 10"x7"x4"/1.25"x2"doorway.2.M = 6"x4"/1.75"1"x1"doorway.3.S = 5".25"x1.75"x1" the gecko the gecko is going to grow about 9" is what I have been reading on the gecko manual new edition by the way it is a great book with lots of helpful infromation cool.

Answer
Hey Roger,

the forty gall. will be a nice tank for you to set up and for your leopard.i know the book, it is a good resource as well.good luck and thanks for the questions and dont hesitate if you have more, enjoy your new leopard as they are great gecko's.

         thanks again

         tommy