Moved the runt out of the plant and outside for the remainder. It has some odd growth in it's leaves, some mutant genes or something, it's happy outside and seems to be doing ok. Growing well this week, really filled out to 21". Cleaned out the self watering buckets and definitely had some root growth down into the wicks. Flowering has clearly started on the plant remaining in the tent, a little slower on the outside one, unsurprisingly.
@Ogpuffz, So my last (first) grow I did LST and wasn't super happy with my results (mostly cause i'm new). This grow I decided to do as little as I felt I could get away with and see how it grew naturally, mostly to improve my understanding so I can improve my LST techniques on the next go round. The only pruning I've really done has been to take out some fan leaves mostly to try to improve air flow and spread things out to keep the humidity down.