I believe the rule of thumb is 20 gallons(US) for one then 10 gallons for every additional one. 20 gallons is about 75 litres. I've got my 2 in a 45x45x60 exo terra, so if you can get one that is taller then that's better as they are arboreal so they like to climb lol :-)

Put some pics up of then when you get them

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