>>Hi, Im interested in getting some cresteds and I was wondering about enclosure size. They had an article in Reptiles that said you could house 1M and 3F in a 20 long tank but after looking through some of the forum posts people were usually saying 18" wide x 18" deep x 36" tall. I have a 20gallon long and I question if keeping 4 cresteds in there would be adequite.
I would think something more like 30 gallons, and tall rather than long, for 4 cresteds. Probably more like 40 gallons if you want to be nice to them with regard to space (and who doesn't?). Of course, this is coming from someone who keeps a single leopard gecko in a 20 Long, so your mileage may vary...
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0.1 Albino Leopard Gecko - Tigger
0.1 Crested Gecko - Pooh-Bear