First Grow - Double Grape 2x2

CherryCoke99 10th January Placed in half full glass of water and left in dark, humid area. Before I went to bed, I checked to see if it had sunk and it had so put it in a damp paper towel and put inside a plastic sealed bag to maintain high humidity. Checked in the morning and had a tap root about a cm long so place into growing medium. 12th January Seed is properly starting to sprout, it's helmet is still showing however will hopefully fall off soon. 13th January Cotyledon's are out, first set of true leaves are showing - Guess this is day 1? 14th January Stem is starting to stretch now, doesn't look like leaves have done much growing. Not sure when I'm going to start feeding it's nutrients due to growing in coco but mega crop says I can feed it as a seedling with a low dosage. 15th January Stem stretching even more, growth spotted in the middle?