Pretty much what Cypher said! Just follow his routine and try taming when he is awake and you might find his routine changes as he gets more settled. His tank looks fine, and he's super cute
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If you find he sleeps in his tube or becomes protective over it then it might be worth removing it (it's not a good idea to let them sleep in the tubes). I have had it before where nervous hams won't leave tubes - perhaps feeling as if they need to protect it (just a theory).. and then when I have removed them they seem to gain confidence. Once settled I've put the tube back and they seem to have a much healthier 'relationship' with it if you get what I mean. So you could try that if you think the tubes are making him nervous.