um...... im guessing you built stink's aero cloner and veg units..... and if thats the case those seedlings should NOT be sitting in rockwool. I would REALLY suggest reading the entire thread best you can, I know its long but it will be worth it, trust me!
once they sprout they need to be pulled out and put directly into the cloner in 2" netpots and neoprene collars, NO MEDIUM. timer should be 1 minute on, 5 minutes off, all day...... with the rockwool you're soaking them.
I start mine in rapid rooters, much easier to crack open. once they sprout they're ready to move!