Hey guys, this is my 2nd grow and i could really use some help on growing these babies successfully. These are very young bagseed seedlings and one of them hasn't sprouted yet. The oldest seedling's leaves have turned yellow for some reason and i'm not sure why because it's not really hot in the room and I haven't fed it any nutes yet. I have some fox farm trio nutrients left from my last grow and I was wondering if they were old enough for me to give them 2 Tbps of Big Bloom for their first week. And my other question is how ,long should I veg them ? I was thinking about 5 weeks would be good but i'm not sure. On my last grow I only vegged them for 3 weeks and they were very small. All Answers appreciated .