In the side by side picture you took they seem pretty even for stretch (assuming they were closely matched clones initially). Honestly I am super impressed with your build!
I put a couple of those bulbs in our bathroom and they were bright as hell but nice to see they can grow a plant well!
When/if you have some time do you mind letting me know how much it cost to put the whole thing together? I am on a huge budget and anything dollar tree has my name written all over it. Poor man's
smart pot is one of their laundry hampers and black laundry bag stretched over it, haha.