Higher VPD Target
I am going to target a higher vpd given the stage and accounting for leaf offsets. This will cause disruption in the environment readings as temp and humidity are rebalanced. Plants look ok, some slighter drooping that may have to…
GrowActuary
VPD Leaf Offset
Most VPD charts quietly assume the leaf is the same temperature as the air around it. In a real tent, that is usually wrong enough to matter. Leaves transpire. That evaporation cools the leaf surface, so a canopy sitting in…
True Leaves
I’m choosing to call today the beginning of the Vegetative stage. Different growers will label the start of vegetative differently. I usually wait until the third set of leaves come in- those are usually the first 5-point leaves. The plants…
Demystifying DLI
DLI is the number I care about when I am setting grow lights, because it combines intensity and time into one daily total. PPFD tells you how strong the light is at the canopy right now. DLI tells you how…
Second Set of Leaves
The seedlings are continuing to soldier on post-transplant. A second set of leaves are emerging in all four. The revised canopy measure is 2.5 inches. I took this morning to normalize my historic VPD readings to use a unified 1.0°F…
Post-Transplant Update
The seedlings don’t seem to have skipped a beat and are continuing growth on the same trajectory. Many growers see seedlings react poorly to the excess soil nutrients at this stage. I’d normally surround them with a lighter mix to…
Moving to Final Pots
Transplanted into final pots today. Took the opportunity to bury some of the stretched main stem. Roots looked very built out for this stage- I am very happy with the rapid rooter. The final pots are 5 gallon AC Infinity…
Week 1 Data Update
Brief week-one placeholder update to log the current environmental readings and keep the grow charts moving. Seedlings are up under the humidity dome. No nutrients yet; just light, warmth, and a stable germination environment.
The Search for an A Priori
Yield estimates from seed suppliers are hard to use directly. Published numbers reflect optimal conditions in controlled environments, and there’s no standard methodology across breeders. This analysis takes a different approach: calibrate against my own prior performance rather than assume…
A New Start
The last grow attempt failed at a very early stage which was quite annoying, but in the scheme of things, could be much worse. This time I am paying more attention to germination. I started by soaking the seeds in…