The lamp finally arrived, installed it, and now I’m making the plants work. Total cost came to $ 314 including shipping and taxes — Kingbrite P55 320W. Ordered from Alibaba. At least I’m trying — the new lamp runs much cooler and can’t heat things up outdoors at all, so I’m pushing hard to hit my 30°C target to get CO₂ working at full efficiency. PPFD is no longer an issue, completely covered now. Temperature is the main battle, had to crank the light to 100%. The results are obvious — leaves are praying, so everything is running at the limit. Also added EOD-FR for 6 minutes after the main light turns off. The plants have started gaining size — #4 is in the lead, #3 isn’t stretching upward at all. Who would’ve thought at the start… should’ve set up a betting pool. Overall growth isn’t explosive, more steady and controlled. Switched the feed to flowering. Keeping nitrogen at 160 ppm for a bit longer, then dropping it to 100–120 ppm in week 3 of flower. Increased potassium to 160 ppm and phosphorus to 50 ppm. pH situation is a bit weird — plant #6 has 5.1 in the runoff and slightly elevated EC, while #3 and #4 are already at 7.1 and 7.3, but EC is lower than input and no issues — weird stuff. By the way, the supplemental lighting arrived today, going to install it. Got blue to try and reduce stretch after the flip, but looks like it won’t be needed this run. Also a new FR bar, 90 cm instead of two short ones, plus two white+red bars for undercanopy lighting to fight popcorn buds. Also custom-made from Alibaba.