Help with new baby redfoot

[jcam]

Hello everyone! I am new to the forum and looking for some advice on my new baby redfoot. I have had healthy Russians for over 10 yrs but having a tropical species is new to me. My baby Sigmund seems to be adjusting well (have had him for ~1 week) as he is eating and moving around a good amount. My concern with him is that he has what appear to be white growth lines surrounding each of his scutes. Is this amount of whiteness normal? He is in 80-90 degree heat and humidity ~80% with frequent mistings and daily soakings. Attached are some photos of him & his home. Thanks for any help.

 

[iAmCentrochelys sulcata]

Not sure what it is, it try soaking it and gently brush a toothbrush. (The part that looks like finger print)
Those white lines are Growth lines.

 

[Toddrickfl1]

It's just new growth, perfectly normal.