Week 3 Update Day 18 (VT18): The nutrient comparison has been running for a week now. While it's too early to draw conclusions about plant performance, the effort required for preparing the irrigation water is clear: GHF is the quickest, followed by BioBizz, and Advanced Nutrients takes the most time. The new pots are amazing—no water leaking out the sides during watering, and the zipper feature for moisture control is a game-changer! Attaching today’s pictures along with a poll for your input. Cam Check Issue: While away, I noticed on the cam that GHF#2 has started curling its lower leaves. It’s well-watered, treated identically to BioBizz#1. Should I repot with fresh soil? Day 20 (VT20) – GHF#2 Emergency: As the title suggests, GHF#2 is in serious trouble. I’ve ruled out overwatering, tap water issues, CalMag deficiency, and soil quality. BioBizz#1, which received the same treatment, is fine. The only variable is the GHF nutrients added during repotting: 2g GHF BioBloom per liter 1g GHF Enhancer per liter Symptoms: All fan leaves are curling from the bottom upwards, while shoots remain unaffected. Unsure what’s causing this, I replaced the substrate entirely with BioBizz LightMix and skipped any additional nutrients for now. The discarded #3 plant was on the windowsill but has been returned to the tent as a backup. It’s looking rough but might be better than losing GHF#2 entirely. Unfortunately, this development jeopardizes the nutrient comparison for GHF, as I’m confident it’s not overfertilization. Let’s see if GHF#2 recovers in LightMix. If it does, the issue was the nutrients. Day 23 (VT23): BioBizz#1: Thriving as expected, consistent with past grows using BioBizz. GHF#2: Still struggling, with all fan leaves curling. Growth is significantly slower than the others. AN#4: Incredible growth and root development—roots are visible everywhere after just five days. Unfortunately, GHF#2's condition has worsened: curling is now spreading to the shoots, moving from the bottom upwards. Growth has stalled almost entirely over the past four days. Next Steps: GHF#2 is likely beyond saving. I may replace it with #3, though its week on the windowsill has stunted its growth. Catching up to AN#4 seems unlikely. I’m considering moving BioBizz#1 alongside AN#4 in the main tent, while #3 gets 1-2 weeks in the smaller tent. However, I’m unsure if #3 should remain with GHF nutrients. It hasn’t been fed yet, and starting an organic regimen this late might not work. Side Note: My girlfriend insisted on saving #3—seems like fate played a hand, and so far, she’s been proven right! 😅 Attaching updated pictures for your insights.