Are my plants growing too slow? before and after p[ics

these plants are like 7wks old, ones a midget lol, in the pics the do look smaller than what they are aswell

Plant 1 (midge)

Before


After



Plant 2 (dont have a name for him or a before pic.)
7wks old


Im using the home made co2, they are under cfls

any advice?

put the cfls closer