Advertisement I recently received a new Green Bottle Blue and would like to know more about caring for this species as a sling. There is ample information regarding adults of this species but no much written about them at this vulnerable stage. I am currently keeping my 3/4" sling in a 1/2 litre deli cup filled with 2 inches of bone dry coco coir substrate. I cut a hole out of the lid and glued a screen over the top for ventilation. The ambient humidity is a near constant 50%. I plan on giving it a pin-head cricket daily and refraining from watering the enclosure until it reaches a leg span of 3 inches. The tarantula has spent its first day roaming around the top edge of the container which I thought was strange for a terrestrial species. Is this a sign that I have done something wrong or just common behaviour for C.Cyaneopubescens? Any good suggestions will be put to use.