==UPDATE 23 AUGUST – PREPARING WEEK 2== ➜ Growth is starting to pick up a bit now that I lowered the light from 60 cm → 50 cm → 45 cm. ➜ Leaves developed noticeably in just one day. ➜ Height increased by 1 cm in a day, from 6 cm → 7 cm. ➜ Tomorrow I’ll start feeding with very low nutrients, around 200–210 ppm, just ¼ of the recommended dose. ➜ Overall, everything looks good. Only minor temp fluctuations, sometimes hitting 29.5°C because I couldn’t run the AC, but windows are fully open. ➜ Plant seems a bit small for week 2, but many growers say this is completely normal. Could be due to:   • Low light intensity early on   • Slight stress from handling and lighting schedule adjustments (first day out of light, then 8h → 15h → 16h/day from day 3 onward) ➜ No major issues; plant is healthy and progressing well. ~•~•~•~•~•~•~•~•~•~•~•~•~ ==Update August 26, 2025 – Autoflower Indoor 60x60x180 cm== Strain: Banana Purple Punch Auto Seed: Banana Purple Punch Auto Plant age: 10 days from sprout --- 1. Substrate and Fertilization Soil: Biobizz Light Mix (nutrients already available for about 4 weeks). Fertilization mistake: On day 8, nutrients were added following the Madman method → overfeeding occurred. Symptoms: leaf tips slightly yellowing, young leaves changing color. Corrective action: nutrients stopped immediately; irrigated with pH 6 water. Note: Biobizz Light Mix already contains nutrients for the early growth phase; fertilizing too early can cause chemical stress even without measuring EC. --- 2. Lighting Light: Spider Farmer SF1000D Distance from canopy: 40–45 cm Practical note: ideal distance to avoid light burn during the first two weeks. --- 3. Climate and Temperature Management Grow box temperature: 28–31°C (current days, no AC, window open in room). Room temperature: 26°C with 66% RH. Grow box humidity: 64–68% Problem: evaporative cooling or humidifier cannot work efficiently when the air is already very saturated. Scientific analysis – evaporative cooling: Text for calculation: ΔT ≈ (T_air - T_wet_bulb) * ((HR_max - HR_current) / HR_max) With RH ≈ 66–68%, ΔT is very limited ( 65%; it only works with drier air