hey topekoms420, during the veg. phase the humidity is not a problem unless it reaches 90% or so. although, some plants mold easer than others, so if you see any signs of white mold lower the humity.

during the flowering phase however, it is best to keep the humidity below 50%...30%-45% should be fine.

btw, your plants could use more light...the floresent lights can be put 1"-2" from the tops.