Hello, thank you for your reply!
She is in a three 4 foot long by 1.5foot wide tank - there is one other tankmate, another axie. They both have the fungus on their gills. I feel so terrible - I know a lot about axolotls, mainly from reading this forum inside and out, and also from owning them. My boss bought them for our office, to make it look nicer and because they're my favourite. The guy who sold them to him sold him... a HEATER. Can you believe that? Don't worry - I wouldn't dream of using it. Okay, so your questions.
We've had Annie for about 3 weeks and Trent for about 2.
Temp in the tank is never above 22 - we are in an airconditioned building and even if it's hot outside it is never hot in here. It is getting into WInter in Australia (*australian axolotl owners all rejoice*) which is good.
There are some decorative, large seashells, they could've been the cause of the bleeding... I might take them out right now.
I cannot post a photo of the set up as, quite honestly, I do not have a camera!
I left your questions about water chemistry until last - I have been meaning to bring in my testing gear from when I had axolotls at home (which, unfortunately died from heat stress) but all the gear is at my parents house, which I cannot retrieve at the moment. I have a feeling ammonia levels could be soaring so I'm glad I"ve got her in the fridge now - Will put Trent in the fridge too, his gills are looking bad.
I am doing a 25% water change every day or so to try and keep these levels down. Annie last ate on Saturday, a big fat worm, so when I came in to work today (Monday) I was quite distressed to see them both looking so bad (my experience is that they won't eat when stressed).
The tank is uncycled, perhaps I should leave them in the fridge until the situation improves and I am able to actually test ammonia/nitrate/nitrite levels.
I have calmed down a bit now as I feel a lot better about them being safe in the fridge, and also as the bleeding has stopped. Does what I've said sound like a good plan of attack?
edit: Also, Trent has this habit of doing this weird thrashy thing.. it's hard to describe, but he's...snapping the front part of his body sideways to his back. Argh, this is difficult...it kind of looks like an uncomfortable, violent twitch. His front and back leg will touch when he does this. Any ideas?