Roma Tomatoes - Day 6

After starting the seeds is rockwool cubes it only took 2 days for seedlings to appear.  On day three the rockwool cubes were taken out of the plastic bag and they were put in a clear plastic dome.  A ziplock resealable bowl was used.  Not clear but it let enough light pass through.  On day 4 the dome was taken off and I just made sure the cubes did not dry out.  This is at day 6 and the seedlings are about 1.5" high and have already started on there second set of leaves.  Won't be too long before I plant then in the net pot an put them in the hydro system.