What size pots were they in there with them roots? I want to try (and thanks for reminding me) painting the inside of a pot with copper paint. Apparently when the root grows to find the edge of the pot, normally it will keep growing longer and thin following the edge of the pot. If it hits the copper paint, then it stumps its growth and get fatter. The idea is that the thicker the roots , the more nutes its takes up. I must try this, this year
Yeah painted it copper makes it work like a smart pot, but with less airflow obviously. The small pots are a little smaller then 1 gallon!! There so perfect to veg out in my small room! I used to have 1.5 gallon pots, and had a round one laying around, and had a plant that i was going to give away in it, so i didn't focus on transplanting and it kept getting bigger and bigger with no signs of root bound!! So i went to the store and stocked up on the small round ones.
Here a link to a past post with a better pic of the pots, just scroll down to look at them.
https://steemit.com/cannabis/@jonyoudyer/veg-room-update-13