the bottom leaves have a yellow color, the smallest ones fell off completely. The upper leaves have yellow tones at the tips. I'm using biobizz nutrients and following the chart exactly as indicated in all the waterings. Could it be nutrient lockout?
Yes, it looks like maybe you over fed them as the tips of the leaves appear to have nutrient burn. However, it doesn't look too bad. I would personally just give them a good watering (no feed) at the next scheduled time and then go back to feeding nutrients again at the manufacturers required dosage stated on the bottle. I would also cut off any leaves that close to the ground as they reduce airflow to the rest of the plant, aren't much use in the shade anyway, and risk the plant contracting rot or mould from the soil.
Good luck!
Now with the rising temperatures, I'm reaching 31-34°C in the indoor. I use Boost Buddy, a CO2 generator through the decomposition of bacteria. Is that enough, or should I modify the indoor in some way to avoid reaching those temperatures? Thanks
i doubt that's hitting 1200-1300ppm co2 and even if it did you are better off with cooler temps.
raising humidity to reduce VPD is another option, but could increase risk of microbial growth. 65-75% for 31-34C would still be a bit high VPD, but would help mitigate the extra light. Fairly decent VPD for flower, acually.
The plants are in week 6 of flowering. One of them still has all the white pistils, but when looking with a microscope, half of the trichomes are starting to look brown. Is it time to harvest? I've already done a root flush.
Hello halexxo, look at the trichomes on the buds not the ones on the sugar leaves. There is no way that this plant is ready and like our fellow grower said already. The ones on the leaves probably turned brown because they got damaged. So take a closer look to the trichomes on the buds. Pick multiple spots to check and multiple buds before you make a decision.