Okay so I made a ROOKIE mistake... I have two gliders (both female) and they are both about 8 months old (2 weeks apart). Myself and my husband recently got a new joey, only 2 and a half months old and thought we were doing everything right when it came to introductions... but we missed a crucial step, the 30 day quarantine.... we know that our new joey is parasite free as she already had her vet appointment and got the all clear on her fecals. However, one of our gliders seems to like her and the other one grabs at her and crabs and lunges, visibly not liking her.... we did our research but feared that if we kept her alone for too long she would become depressed... now we are scared and wondering if there is any hope for our gliders to ever get alone, if we should back track and try to start a 30 day quarantine and start from scratch or if we are too deep to go back and should start looking for a new cage for the joey and a rescue to pair her with... we are fairly new to gliders and honestly just want every single one of our gliders to be 100% happy and we may have jumped the gun but it was more because of fear for the joey rather than our own impatience...

I have read from experienced glider owners that glider depression is basically
just a myth. they live in colonies, and are best and happiest together with
others, but its not like they will suddenly jump to their death cause they don't live with other gliders.
One breeder even has a glider that lives alone and has refused all attempts
to add another glider with them.

the 30 day quarantine is to prevent disease from spreading to other gliders.
so if the gliders are healthy there is NO reason to do this again. Also our
vet did a fecal test, BUT said that is NOT a 100% guarantee, infected gliders
could sometimes get a passing test cause parasites are not always coming out
in the poo. He looked over the glider, looked for swelling, redness, glider
activity, behavior in addition to the testing.

Just because that introduction failed once doesn't mean to stop.
SWITCH sleeping pouches every few days, put cages 8 inches apart, give them
some time, 2 or 3 weeks. then try bathtub introductions again, weeks later.

we had many successful introductions, most gliders are willing to let others
join the colony, ONCE they accept that new scent. but our last one, Gus the
alpha of 6 glider colony was NOT going to let 2 more in, after a long period of
scent training he just wanted to fight them in the tub.

I say give it another try or two. remember during introductions they may spat
some then settle down. spat - quick squabble with hiss or some noise lasts for a
very short period, fight - violent wrestling, lots of noise, or no noise if
biting.