I don't think it's anything to worry about, magnumalessio... but when you water, make sure some water comes out the bottom of your pot - then you will know it has been watered enough. And be careful when poking holes in the soil that you do not poke too close to the plants... they're very young and small and will have delicate roots systems.
Next time, it would be good to mix a lot more perlite into your soil so this doesn't happen. If these are going to be transplanted at some point, definitely make sure the pot has a goo 30% perlite in it!
Good luck