Niiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiice mandarin you've got there carbon. Bushy girl. I've got the cm on my list for next grow, they look like hands-down easily the best type of mandarin I've ever seen before. That goes for both buds and fruit.
I've been following along with your grow, I'm pretty sure we started around if not exactly at the same time... You've definitely got a bit more size though! Wish I had airpots
guess I must have 3 really short phenos. Reflective matting on the soil is a good idea, I was thinking of doing something similar. Are you at all worried about rot or anything detrimental from the lack of air?
I've been following along with your grow, I'm pretty sure we started around if not exactly at the same time... You've definitely got a bit more size though! Wish I had airpots