Deep purple stems...need help pinpointing why

Yet another thread about purple stems. Lol Bear with me

I’m running QB LEDs
Medium: FFOF mixed with 25%perlite, some dolemite lime and also some DE mixed in as well.

plants took a week to recover from transplant and have been growing more quickly since. I foliar sprayed once with a compost tea dilution after lights off and then once with aloe Vera dilution latern the week.

also, last watering I used a great white myco solution.

and I water when it starts to dry up.

plants look healthy other than the purple stems. Any thoughts?

Those are some really poor quality images.
Anyways what happened to all the leaves and branches on that plant? Looks like just a top.
Some strains will just have purple colored stems. Sometimes its a deficiency. Sometimes different plants of the same strain will look totally different. If the leaves look healthy and plant is growing good then u are probably ok

The missing leaves was due to watering issues when they were seedlings in a solo cup. I tools turns first over watering then under watering. I finally got a handle on it now. Lol but after taking a week or so to recover from a transplant, they’ve been growing well.