Second Indoor Grow

Days 35-42 (Day 36) Some minor problems starting to arise here. A few times this week it got up to 90+ degrees which I think may have caused a bit of heat stress in some of the plants. I’m seeing a bit of cupping/crinkles on some of the fan leaves and some of the new growth is looking pretty gnarled and twisted. I hear windburn can cause this too so I’m turning my fans down to low speed. This could also be a problem with humidity so I’m going to turn off my humidifier, dim the lights and raise them. During my last feeding I mulched in some worm castings but it seems like they’re keeping the soil/coco from drying out. Pots are still decently heavy and even the surface is still quite moist but they aren’t showing any major signs of overwatering. I figure it will only be a few weeks before the castings break down so I will just leave it. A few of the plants are starting to show yellowing leaf tips which is probably some kind of micro nutrient lockout from my PH being slightly too high. It could also be from nute burn so I will water in 6.0 until I see some runoff. Although the most likely culprit is potassium excess. I’ve been feeding potassium almost as much as nitrogen so far. I know that can cause the yellowing of leaf tips by locking out trace minerals. It can also cause leaf problems like crinkling. Excess K can even cause water retention! Will water at 6.0 until run off next watering. The lst is coming along nicely. It was a good idea to remove the first two sets of branches (not leaves). Now I have 4-6 perfectly even stems coming from each plant that I plan to top one more time each. (Day 37) Today I’m going to vacuum, clean, wipe down and spray all my equipment in the tent. I’ve been letting the floor get quite dirty and I haven’t had the chance for a thorough clean since last round. I’m kind of surprised I haven’t seen any powdery mildew yet. I guess the prevention spray is working because the room has to be infected from my last crop. (Day 40) I was reading that you can foliar spray whatever you are deficient in for an immediate uptake. I‘m going to try that with my current potassium excess since it locks out trace minerals. I’m going to foliar feed a bit of phytoplankton at 15ml/L and some MagnifiCal + VeloKelp from Remo nutrients both at 5ml/L. The cal mag is not organic but as long as it’s not going into the soil and doesn’t contain chlorine I’m fine with it. I’m also going to be changing the light cycle to 18/6 for the remainder of veg. This will be their first dark cycle so they can properly foliar feed. Edit: humidity shot up to 85% a few hours after foliar spray. I went to top dress everything today and I mixed up the plants while doing so! So the ones I was unsure about I gave 1 extra tablespoon. I won’t top dress again for at least 10 days. Might give a light tea sometime next week. I also tilled the shit out of the top of each pot. It had a hard crusty layer on top that was keeping the medium from drying out properly. I’m not going to water again until everything is bone dry. Then I will water until slight runoff at 6.0 ph with some Dr. Marijane bacteria/root probiotic. I’m starting too see a lot more of these abrasions on some of the bigger fan leaves. It almost looks like thrip damage but I’m 100% sure it’s not a pest above ground. It could be bulb mites, which I found in my worm castings but I can’t check until the roots are more established in their pots. The leaves themselves are cold and feel damp to the touch. I haven’t even seen a fungus gnat since I last fed. I’m hoping it’s related to the K excess and clears up with the troubleshooting. (Day 41) Just ordered a wire cube rack to prop my plants up with and help evaporation/root warmth. Each cube is 11.8”x11.8”x11.8” and it comes with 16 cubes. So it will fit just perfectly in my 4x4. Depending on the size, I might order another one for the flower room where I would need 25 cubes.