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well i just got my new hatchling and i have only had him for about 4 days and he has not eaten. does he just need to adjust.

It's normal for them not to eat for a while when they are new because they get nervous in a new environment. If he's not eating after a week then we'll get concerned. In the meantime be sure he has lots of peace and quiet and privacy while he's adjusting.

Here are some tips on enticing a turtle to eat:

http://www.redearslider.com/entice_eating.html

if they look healthy then yes, they simply need time to adjust. sometimes it takes longer than a week for them to start eating.

Just to be sure, what are the temps of the water and basking area? Are you leaving him alone to eat?