So they're on about day 12 or so out of soil. I know it isn't quite time yet, but what should I be looking for to know when to step up in our size. Hope the picture is good enough.
I actually did that unintentionally the day before yesterday. My cat jumped into my tent and knocked 3 of them over and slid out of the cup about halfway. They are looking good. Not filing the cup yet, but healthy looking and strong.
I transplant when the plants are drinking every other day watering until slight runoff in coco.
Another way would be just wait until they have 4-5 node sets before you move them to a bigger container.