Reefer's Official Blueberry Gum Grow (G13 Labs)

First of all I've attempted a couple of journal before as a complete nube. To no surprise, no harvest due to lack of patience and schedule difficulties. Here is an official attempt at a pc grow.

Reefer's PC Grow Journal
VEG
Homemade PC Grow Box
Nutrients: CNS 17 Starter Kit
Lights: 2 X 13W 6500k CFL'S and 1 X 23W 5000k CFL 18/6
Ventilation: 1 X 80MM intake and 3 X 120MM exhaust
Homemade CO2 generator
TEMP: 81*
HUMIDITY: 41%

Here is my BBG seedling at 7 days old. Fed her 1/2 strength nutes (grow, liquid karma, silica blast and ripe) with purified water. I don't know if you can see or not but the new set of leaves are browning/purpling I don't know if this is a coloration with the pheno or possibly ph imbalance. I don't see it being the lights because the edges of the leaves are silky and green with no crisp. It's only in the mid leaf away from the stem but not extending the entire length of the leaf. Any comments, questions, or concerns? All criticism is welcome, this is all a learning experience for me.

here's that pic. if you look closely, you can see a bit of discoloration around the top center.
View attachment 2709382

a few pics of the set-up
pics 2 and 3 were taken open from different distances and pic 1 is closed

All looks okay so far Reefer. Tho the LST does look a little intense, what're you pulling the plant over with, it looks like fishing wire here. Just go careful that you don't cut into it, as that could feck you from the beginning.

If it were me, I wouldn't use any nutes this early on. Let her find her feet, then start pumping in the good stuff. You've got tons of time ahead of you, so just go easy, and keep her happy.

Subbed.