I don't see why not. They need a stable environment and clean water, size really shouldn't be an issue assuming he's not scrunched up in there. What kind of carpet...haddoni? If so, depending on the types of light you do have on the 55, I would be tempted to just go straight to his final home. I think the stress of multiple moves will be worse than having low light for a couple days. Once he settles in feed him to make up for the lack of light.
jds