First of all I would like to say hello everyone. I've been observing this website for quite some time trying to learn as much as possible for my first grow.To get straight to the point I have some 8 day old seedlings and the tips of the leaves have just a little yellow in them. I did some research and found this may be the beginning of nutrient deficiency. I really want my plants to come out good the first go around and I'm trying to prevent problems before they become a MAJOR PROBLEM. I have my plants on a top feed drip hydroponic setup with 2 40watt growing flourescents. They are getting fed 3 times a day for 3 mins. I'm using Holland Secret nutrients. The first 7 days were half strength. Now I'm on full strength. Humidity stays from 60%-70%. Temp is between 70-80F degrees.I think they look decent, but I wanted some pro's advice. Thanks!