ETHOS Clones (Diary #8)

Didn't water for 3 full days to let the containers dry out. Was fully expecting a massive spike in PPM runoff due to the amount of time the solution has sat in the substrate but it was the exact opposite. As you can see by the IN/OUT below, they're feeding just fine. The pH is in range for the most part so that's a small victory. However, there are still cupping leaves. The lamps were raised 5 days ago to eliminate light stress as a culprit and humidity was lowered to 60% MAX (lights off). The problem may actually be underfertilizing but I'm still going to lay off the watering frequency. We'll get to the bottom of this yet! The plants in the 3 gallon bags will get a drink tonight. Just didn't want to soak everything 3 hours before the lights go off. July 25 AM KC1 In: 580 PPM/5.9 pH Out: 513 PPM/5.9 pH (22c) (-67 PPM) ✅ KC2 In: 580 PPM/5.9 pH Out: 432 PPM/6.0 pH (20c) (-148 PPM) ✅ GS In: 580 PPM/5.9 pH Out: 530 PPM/6.1 pH (21c) (-50 PPM) ✅ ELB In: 580 PPM/5.9 pH Out: 516 PPM/5.9 pH (21c) (-64 PPM) ✅ • 2-3L produced 300ml of runoff Jul 26 AM (2L) *MC In: 472 PPM/6.0 pH Out: 520 PPM/6.1 pH (21c) (+48 PPM) ❌ *ELB2 In: 472 PPM/6.0 pH Out: 511 PPM/6.1 pH (21c) (+39 PPM) ❌ *CG In: 472 PPM/6.0 pH Out: 606 PPM/6.3 pH (21c) (+144 PPM) ❌ - 400ml runoff - Node spacing is increasing from the lamp height - pH is creeping up - Leaf cupping on new inside growth (MC) I'm wondering if this pH problem I've been having is because I'm trying to adjust the inflow with the runoff values... If the plant is using energy to raise a low pH to use the locked out nutrients and I keep dousing it to lower it, that can't be helping. The 3 gallons are at week 3 since rooting so I might've been ph'ing low at 5.8. I probably should've started around 6.2 for CaMg uptake during early growth. Coming off my worst yield yet and now these new issues...yikes. I've had better results not even checking runoff and PPM etc...I'm pitching the nutes and opening new bottles. Maybe it's old I'm out of ideas Jul 28 PM (2L) "KC1 In: 605 PPM/5.9 pH Out: 588 PPM/6.0 pH (21c) (-17 PPM) ✅ "KC2 In: 605 PPM/5.9 pH (3L) Out: 532 PPM/6.0 pH (22c) (-73 PPM) ✅ "GS In: 605 PPM/5.9 pH Out: 595 PPM/6.1 pH (20c) (-10 PPM) ✅ "ELB In: 605 PPM/5.9 pH (2.25L) Out: 617 PPM/6.0 pH (21c) (+12 PPM) ❌ 5 gallon bags are doing ok...cupping is a little better since I allowed the humidity to creep up. Checking my VPD, it was a little low for the temperature. Watering every 3 days for now. Lamps are back down to 30". 3 gallon bags are staying wet a lot longer than I expected them to so they're drying out as well. July 29 I topped the 2 Kush Cakes and the Mandarin Cookies to let the lower growth catch up. Not taking any stalk off this time, just clipped the new growth at the very top. Jul 30 PM (2L) *MC In: 510 PPM/6.0 pH Out: 627 PPM/6.1 pH (21c) (+117 PPM) ❌ *ELB2 In: 510 PPM/6.0 pH Out: 531 PPM/6.1 pH (21c) (+21 PPM) ❌ *CG In: 510 PPM/6.0 pH Out: 545 PPM/6.3 pH (21c) (+35 PPM) ❌ • 2L in, 300-400ml out • CG pH is rising out of range • Water tomorrow 1L @ 475 PPM/5.9 pH Either need to water more at each event to get more runoff , or more frequently to keep the PPM from climbing too high. Jul 31 AM (3-4L) "KC1 In: 602 PPM/5.8 pH (3L) Out: 557 PPM/5.9 pH (21c) (-45 PPM) ✅ "KC2 In: 602 PPM/5.8 pH (4L) Out: 552 PPM/5.9 pH (21c) (-50 PPM) ✅ "GS In: 602 PPM/5.8 pH (4L) Out: 610 PPM/5.9 pH (21c) (+8 PPM) ❌ "ELB In: 600 PPM/5.8 pH (3L) Out: 550 PPM/5.9 pH (22c) (-50 PPM) ✅ • Clawing fan leaves, have to water more often (PPM spikes) Cupping leaves continue. Fans aren't pointing at them directly, lights have been raised with no improvement, watering cut from once a day to every 3 days, pH seems good, don't think I'm overfeeding, there's no bugs, temperature stays under 27c and above 21c... It's only the Grandpa's Cookies X's so who knows. Not me. This upcoming week I'm trying to get the humidity to 60% minimum during lights on to satisfy VPD.