was looking at my funds and not looking so good so know am thinking of using a fish tank instead of a TERRARIUM it would be a lot cheaper. i know its going to be a bit of a pain when i have to clean it. also i rather spend more money on a nicer gecko then all the money going to the tank. am also interest down the line on getting another gecko hopefully to breed so what tank size do you guys/gals recommend i was looking at a 20 gal X-High 20 1/4 x 10 1/2 x 23 3/4(saw this size online), 20 gal High 24 1/4 x 12 1/2 x 16 3/4(i know it would be easy to find this size),20 gal Long 30 1/4 x 12 1/2 x 12 3/4(can get it really cheap). Do you guys/gals think the crested get some how gets stress out not having a tall tank? ive seen some people keep a single gecko in a 10 gal tank and 20 gal Longs. thanks again for all the info you guys/gals have provided i just want to get it right for the animal to live a happy life.