Week started with the seedlings looking like they had simply been overwatered.
After a couple of days without watering, the solo cups felt light and the plants began to droop. They were watered, but instead of recovering, the droop became more noticeable.
To reduce stress, light intensity was lowered from roughly 300 PPFD to about 170 PPFD, humidity was reduced, and VPD was allowed to rise to around 0.9 kPa. The plants improved slightly, but they never fully bounced back and growth clearly stalled.
That led to a closer look at the root zone.
One plant was removed from its solo cup and the cause became obvious: the cup was packed with bright white, healthy roots. There was no visible rot, slime, or unhealthy root tissue. The plants had simply filled the solo cups much faster than expected and had become root restricted.
Phenotypes #1 and #2 were transplanted into the 2×4 living-soil Tray2Grow planter and watered in with Rootwise Mycrobe Complete, Rootwise Enzyme Elixir, and Kiaha.
Within about a day, both transplanted plants showed a clear turnaround with firmer leaf posture, more upright new growth, and stronger overall vigor.
Environment
PPFD during recovery: about 170 µmol/m²/s
VPD: about 0.9 kPa
Light intensity: reduced during the stall, then gradually increased again after recovery
Week 2 Notes
The biggest lesson this week was how aggressively G2 Kush roots.
These plants became root bound in solo cups in less than a week above ground. The symptoms initially looked like a watering problem, but the real issue was rapid root restriction.
Key observation: G2 Kush appears to need a very early transplant. On a future run, I would not leave these seedlings in solo cups for the usual amount of time.