I'm no professional, but it might be the fact that you're using tap water, which contains chlorine and definitely isn't helping. To get the chlorine out, just fill up a container with the tap water and let it set for a couple of days, possible even a week. The chlorine will evaporate out of it, leaving the water fresh and chemical free.
Also, you might want to crank that humidity up to about 70% for veg and back down to 50% for budding.
That's all