Title: 100% ChatGPT-Guided Grow ā 12/12 Fast Flower Test (With Supervision)
Hey growers!
This grow is an experiment: I'm letting ChatGPT guide my entire grow cycle, from lighting to nutrients to environmental tweaks. Itās all based on AI suggestions.
Of course, Iāll still be keeping a close eye on things ā if I see something going wrong or the plants arenāt vibing with the plan, Iāll step in. But the idea is to test how far AI can take a grow under controlled conditions.
Strains ā All from @Sweet_Seeds (F1 Fast Version):
Mental Rainbow F1 Fast Version
Tropicanna Poison F1 Fast Version
S.A.D. Sweet Afgani Delicious F1 Fast Version
Gorilla Girl F1 Fast Version
Setup:
Coco in 20L @MarsHydroLED SmartPots
Grow tent: @SecretJardin DR240W
Lighting: 2x 720W LM301H EVO LEDs
12/12 from seed
Germination: May 14th / Main grow starts May 20th
Nutrients: Hy-Pro Coco A/B CalMag Pro, @BAC Silica Power, F1 Extreme Booster
Irrigation: Week 1 hand watering, then Blumat
pH starts at 5.8
COā supplementation via natural gas system (Spider Farmer GGS)
Goal: Complete a full grow cycle in 10 weeks or less, from seed to harvest.
Updates will be posted in a personal yet informative style ā a hybrid of stoner chill and data-driven grow logs.
Letās see what AI can do in the grow tent. Stay tuned! š¤šæ
š± Weeks 1ā3 (May 20 ā June 9) ā Seedling to Early Flower (Stretch Phase)
Goals: Strong root development, firm stem structure, controlled stretch
Light: 12/12, start at ~500 PPFD ā ramp up to 800 PPFD (day 14ā21)
COā: 1500 ppm (only active when lights are on and temps 26°C)
Temperature: 26ā28°C day / 22ā24°C night
RH: Start at 70% ā gradually lower to 60%
Nutrients (EC ramp-up):
Start EC: 1.0 ā increase to 1.4
Plagron Cocos A+B + CalMag Pro (0.2 EC tap water)
Always mix Silica Power first (0.1 ml/L)
Actions:
Week 2: Start light defoliation on lower leaves
Week 3: Begin LST if desired
pH: 5.8 throughout the veg phase
šø Weeks 4ā5 (June 10 ā June 23) ā Flowering Phase 2 (Bud Set)
Goals: Initiate flower formation, maintain healthy leaf mass, stimulate bloom
EC: 1.5ā1.7 (monitor Blumat watering rate carefully)
RH: 55ā60%
Nutrients:
Plagron Cocos A+B
CalMag Pro
Silica Power (0.1 ml/L ā only until end of week 5)
Start B.A.C. F1 Extreme Booster at half dose, watered manually twice a week
Light: 900ā1000 PPFD if plants can handle it
š¼ Weeks 6ā7 (June 24 ā July 7) ā Flowering Phase 3 (Bud Building)
Goals: Develop dense flower structure, maximize flowering potential
EC: Up to 1.8 max
RH: 45ā50%
Nutrients:
@Plagron Cocos A+B + CalMag Pro
@BAC. F1 Extreme Booster at full strength
Actions:
Final defoliation at beginning of week 6
Inspect leaves regularly for airflow and mold prevention
š§ Weeks 8ā9 (July 8 ā July 21) ā Ripening Phase
Goals: Maximize terpenes, trichome maturity, flush medium
Week 8:
EC: taper down to 1.4
Stop using booster
Optional single flush with enzymes (manual watering)
Week 9:
Only plain tap water through Blumat (~0.2 EC)
Temperature: 24ā26°C
Dim lights to ~600 PPFD for final 3ā4 days
āļø Week 10 (July 22 ā July 28) ā Harvest
Trichome check: Aim for 10ā20% amber with a loupe
Optional: 48 hours darkness before harvest
Temperature: Keep low (20ā22°C) to preserve terpenes
Deadline: Harvest no later than July 28
Powered by the new 2025 @SpiderFarmerLED GGS system..
Detailed setup (only SF parts mentioned here):
SF GGS Grow Light Controller (1x)
SF GGS AC10 Kit (1x)
SF GGS 6 Inch Clip Fans (2x)
SF GGS 6 Inch Inline Duct Fan (1x)
SF GGS SensorPro Kit
SF Ultrasonic Humidifier
May 20 ā COā moved outside, lighting dilemma, and a warm future ahead
Moved the COā generator outside the tent today. Immediate win: steady 700 PPM from just the pilot light, no active burn needed. When turned off, it drops neatly to 400 PPM, matching the calibration point. Double-checked with the Dimlux COā sensorāreadings line up perfectly.
Still no tracking info for the originally ordered lights, so out of impatience I grabbed two new 720W LM281B fixtures from Germany this afternoon. Should arrive Friday/Saturday. It's a Trade Assurance order, so in theory, I'm covered.
Now the question: let the seedlings coast at 259 µmol for two more days, or hang the old lights to boost them to 500 µmol? Eight out of twelve are already above soil, and honestly, Iād rather not mess with the current vibe. Leaning toward leaving them beālow stress, happy sprouts.
Best part: temps dropped to 27.9ĖC inside the tent now that the COā generatorās out. Room itself is 24ĖC, so all in all pretty chill. Curious whatāll happen once those dual 720W monsters fire up⦠itās gonna get toasty, no doubt.
24/05: Stocked up on new Plagron nutesāfinally. Now I can lock back into the full 10-week feeding plan (Plagron Cocos + B.A.C.). Flushing the res tonight and going full reset. Mixing fresh soup right after, dialed in to match this schedule:
Week 1:
Plagron Cocos A/B: 2 ml/L
B.A.C. Silica Power: 0.2 ml/L
Plagron CalMag Pro: 0.5 ml/L
B.A.C. F1 Extreme Booster: 0 ml/L
EC: 0.9ā1.0
pH: 5.8
PPFD: 500
DLI: 22
RH Day: 70%
RH Night: 65%
COā: 700 ppm