Bought a new pH pen, the one I was using started giving very bad readings, was off by as much as 0.8.
Defoliated more, attempted to lollipop, removing the lower half of growth.
Put in a trellis net.
2 plants in the back are growing much larger. The two up front are more bushy.
No noticeable difference between which medium is performing better.
The plants are starting to look a bit better after the repotting with fresh nutes.