Hey chris, not sure if you tried emailing me; my email has been crapping out lately, so I don'nt know who's been trying to reach me...
As I'm sure you've read in past posts, tree monitors are among the most difficult animals to acclimate. The reason why you are having difficulties when compared to your ackies is, that ackies are captive bred animals-been bred for dozens of generations now... Tree monitors, especially blue tree monitors are ALL imported, WILD CAUGHT animals... Think about it...if you were living happily in the treetops of an indonesian forest, and then you were captured, shoved into a sack, held in poor condition at the exporter's facility, shipped 2000 miles, into the hands of an importer, where they probably weren't given proper care and attention, then to a retailer/distributor, and then into your posession... That's an awful amount of stress for a wild animal.. Acclimation to captivity is a long, and sometimes frustrating ordeal... You cannot expect an animal who is now in a new unrecongisable(no matter how "naturalistic" you make it..), to just say, "well, at least it's better than the exporter's enclosure", and resume eating like nothing ever happened???
I would suggest that you keep them isolated in separate, smaller enclosures- so that you can monitor each's progress, or problems...
For my female boehmei, I am currently using a 65 gallon/ish rubbermaid container with a 50 watt basking lamp fixed to an acrylic cover, with only a few holes drilled in the top for air exchange. I have a few branches and some cork stacked up to provide hides, and access to a basking temp of about 140F. For substrate, I use dampened sphagnum moss, to keep humidity up, and I spray the quarantine enclosure a couple times daily, to encourage her to drink off of the sides of the tub, or cage furniture.. Remember, it is very unlikely that this freshly wild caught animal will know to drink out of a water bowl... Being a tree denizen, I would imagine that it would be very rare for a tree monitor to travel down to the forest floor, and seek out a standing body of water to drink from... I would assume they drink off of leaves and branches in the wild after rainstorms..
Humidity is the key, and to provide an ample basking site and ambient air temp- I keep the air temp about 83-85F all day/night long. I usually wait a few days to let them get settled in to their quarantine enclosures, and after a couple days I will try feeding live or f/t fuzzies. Keep your observations limited, as your captives will not come out if they have a big ogre(hahahaha) looking down at them all the time...
Hopefully, they will turn around and start eating with time, and proper conditions.. I think that keeping them together in such a large enclosure is a bad start; even if food was disappearing, how would you know who was eating it??? Keep them separated until you know that they are doing fine... then carefully introduce them.. You are also throwing two strangers together and forcing them to live in a limited area...How would you like it if you were forced to share a 6 x 6 room with a stranger from another country, like detroit...haha.. So that is another thing that must be kept in mind.. I usually keep my tree monitors in quarantine for several months; I think my female boehmei is going on month 4 or 5 now in quarantine; although she'll eat 8 fuzzies in a day, and drinks water regularly after I mist, I still feel she needs to wait a bit until I introduce her with my male... But I would have to do a lot of rearanging and constructing of the enclosure before I do that...
So basically, tree monitors are a pain in the ass... And, unfortunately, most dealers do not tell their customers this sad, but true fact, and it is even more depressing to see the hundreds of tree monitors that succumb to improper husbandry/conditions each year... It kind of makes you want the gov. to stop importing these animals if they are just going to die...but then again, how would captive bred individuals ever come to be(will they ever??), without importing wild caught individuals...
The key to their success, as well as any monitor/reptile is water- without proper moisture/humidity levels, most monitors will dehydrate and die.... Keep them well hydrated and heated, and everything else will hopefully follow... Don't rush them though, they are not the species to push around and expect them to do things for you....
I hope this helps a bit, good luck with your macraei, let us know how things turn out for them...
Bob
The Odatriad- V. macraei