Your tank looks awesome - really natural and well put together. Can't wait to see photos with your Axolotl(s?) in! Only thing I would say, is that I have my spray-bar pointing against the glass, so it limits the disturbance of the water - but don't think this is a huge problem.
I'm re-doing my tank at the moment, good to have some inspiration from other people :happy:
*Edit. Oops, think I can just make out an Axolotl tail that I didn't see before. And noticed you're spray-bar has suckers attached to the glass, so you couldn't really have it anywhere else. My mistake!