Been a while since I've been back. How's the babies? Read all the post sounds like these great people got you on track.
In the picks I sent I started them out in half Mother Earth + perlite and half FFHF. FFHF is 6.5 ph as soon as the roots hit the bottom they got put in their final home.
Soil mix was 1/4 FFOO 1/2 FFHF 1/4 coco core perlite mix, 5 lbs bone meal, 5 lbs suppersoil concentrate.
Hit them with a root stimulator 2 days before transplant and with the first watering of the transplant 1 week later
calmag.
As they have stated don't over water. My wife who has the opposite of a green thumb went in the day after I watered and tried to help me out while I was gone and flooded them.
Had to boost temp to 85 and flat shut off the humidifier, been off 5 days and the humidity is finally getting down around 60.
Buy multiple pH calibration packs. If dropped mine once and it knocked it off. Make sure to get the water at the right temp for the calibration packs. I use distilled water with mine when I calibrate.
Keep a journal of every thing you do, easy to learn from you mistakes and rewards if you have something to refer to. I use a giant calander and a note book.
I take pics every week to compare photos.
On lights mine are at 20 inches but I have 2 going. My
Mars hydro is at 50% the kingbright with 301 h is dialed at 1/3 gives me the same light coverage across the tent. 23000lum is what they are liking now.
I'm PH my water at 6.8 because my run off averaged 6.4 may go up on my water.
First time I used liquid nuts years ago I didn't check the pH after mixing. Plants turned yellow and I thought I wasn't adding enough nutes. Killed them all because nutes on the watter were too hot dropped pH of soil run off to 4, 25 times hotter than it should have been.
Anyway I'll stop going over all my mistakes and I wish u luck.
The pics I posted you were about the same age as yours but mine are my first auto flower and first indoor grow.
Had one get a little shock but their drying out and starting to look good.
And for all of you that like the kingbrite 240 301h, all the plants started streatching away from the hydro twards the Kingbrite.
Week 2 and week 3