Go with a 12" x 12" x 18" terrarium until the crested gecko becomes an adult then you can move it to a larger tank. Or if you want you could even use a large KK for awhile and then move him/her to the 12" x 12" x 18" setup. A crested gecko can grow as large as 4 to inches snout-to-vent length (SVL) and 8 inches (in total length). Males can grow up to around 25grams, while females can grow as large as grams. How large your crested gecko gets depends on many factors such as diet, humidity, temperature, genetic factors, and geo-location amongst others.
Nov 02, · Adult Crested Gecko Tank Size An adult crested gecko could vary in weight, but a crested gecko is could be considered an adult once it reaches grams. There isn’t an exact weight that an adult gecko should be once full-grown. Some geckos of certain lineage could be noticeably smaller than others. Feb 03, · Crested Gecko Size Both male and female crested geckos reach a moderate size of 4 to inches snout-to-vent length (SVL), and 8 inches in total length. Crested geckos are sexually mature when 15 to 18 months of age, and at a weight of approximately 35 grams. Crested Gecko Life Span.