Looks like I fell into the classic coco trap โ when itโs still too early to water to runoff. You either overwater, or the pH in the root zone keeps rising every day.
The result is obvious: #4 and #6 got calcium and phosphorus lockout because I didnโt water to runoff right after transplant. Theyโre still recovering.
#3, on the other hand, is doing great โ you can tell by how perky she looks. She was transplanted later, so she got proper runoff earlier than the others. It literally took just 2โ3 days without runoff to cause issues.
Overall, these are just early-stage problems that wonโt matter later. Weโll probably remove those big leaves anyway since theyโll be in the shade (or maybe not, if theyโre still functional when side lighting kicks in โ then the marks might stay ๐).
Plants are already adapting to the watering routine, and root zone pH should stabilize soon.
Feed (input): EC 1.5 / pH 5.4 (today tested 4.9 just for fun)
Runoff: EC 1.1โ1.2 / pH 6.4โ6.7
Experimenting with VPD โ was around 1.3โ1.35 most of the week, now pushed to 1.5.
Growth rate is decent, leaf color recovered to bright green, no stunting.
Interesting note โ plant #6 has a very unusual branch structure, never seen side branches attach like this. Doesnโt want to grow upward at all ๐