i dont grow in soil but i would say you are watering way to much.from what i've read should be once every 2-3 days or when top couple of inches dry out especially with low heat cfl's.maybe someone who uses soil could confirm ?
they look pretty good for your first? my first looked like crap mostly ha ha.
another thing to note they are going to stretch to maybe double there size once flowering is induced with 12/12 light cycle.i also learnt that the hard way.
hope this helps.
:jointsmile: