i would disagree, by experience with my p.m. grandis, i bought 3 p.m. grandis babies at an expo, 2 were properly lighted and 1 was not.
the one that was not developed shed problems, and balance problems. it cant climb the glass, and is .33 the size of the others its same age. and it cant jump straight, it loops as it jumps
-----
1:8:0 leopard geckoes
1:1:0 giant day geckoes
2:2:15 bearded dragons
0:0:9 cuban/green tree frogs
2:1:0 crested geckoes
1:2:1 corn snakes
2:4:0 ball pythons
0:0:1 blue tongue skink
0:0:1 florida ribbon snake
1:0:0 yellow rat snake
3:10:? furry composters (rats)
1:1:0 ferrets