1st grow Blackberry Kush & Daiquiri Lime

My first grow! So exciting! I've put just a bit of granulated horse manure fertilizer into the germinating soil, right before I've read it's a no-no. I made sure to mix it thoroughly and the seedlings are looking fine so far, but maybe it has come back to bite me later. I've kept them on my windowsill for the first week, they had sun in the morning and then I put them under my desk LED light, which is quite strong, and kept them there till about midnight. Then back to the windowsill. On pictures they look quite similar, but the Blackberry Kush was growing a bit faster since the beginning. Might be (partly, maybe) because the Daiquiri Lime seed was smallish and light in color, probably a bit weaker. I managed to accidentally delete most of my pictures, hence just these two.