NO
I lost my 3 yr old Fatboy for unknown reasons
and purchased a baby TE-BOY
3 weeks old 4" long.
I had Fatboys 20 gallon long in the attic .
So i decided to set the 20 galllon long in the 4x2x2 enclosure on rocks to assure the 12 inch distance under mega ray and 103 basking temp .
Well after a couple of weeks of the hassel of feeding and cleaning enough was enough.this was to much work.
I removed the 20 gallon and let TE-BOY run wild in the 4X2X2 .
This boy is now 6 months old and now 19 inches long
.
Fatboy took 1 yr to reach 20 inches long.
Just put that baby in the 55 and let him/her have fun with all that space.
just make sue you're set up is correct.
Hope this helps.
Mike D.