Yeah Buddy … for 20 days old autos, these girls do look stressed and undersized, and the twisting / tacoing is a big clue. Nothing catastrophic yet, but they’re definitely not cruising.
I’ll break it down grower-to-grower, nice and practical.
Main issue: Too much light (primary suspect)
300W LED at 50 cm on 20-day autos is very likely too intense, especially if it’s at high power.
Signs pointing to light stress:
• Tacoing / canoeing leaves
• Twisting growth
• Lighter green tops
• Plants staying compact instead of stretching normally
They’re not sick — they’re stressed.
Back off the light, keep feeding light, and let the pots dry properly.
Autos don’t like being pushed early.👉 Autos hate early stress. They don’t “recover later” like photos.
âś… Fix immediately:
• Raise the light to 65–75 cm, or
• Dim to ~60–70% power if possible
• Target PPFD ~300–400 at this stage (not more)
⸻
Secondary issue: Nutrition slightly off
The pale green one looks like:
• Mild nitrogen deficiency, or
• Roots not absorbing properly due to environment / watering
Autos at 20 days should be:
• Even green
• Actively stacking nodes
• No twisting
âś… Nutrition advice:
• Keep EC low and steady (autos prefer less)
• Avoid chasing deficiencies aggressively
• If feeding: ¼–½ strength max
Overfeeding + strong light = exactly this kind of twisted, unhappy look.
⸻
đź’§ Possible contributor: Watering rhythm
Very common with new growers.
If roots are:
• Always wet → oxygen stress → twisted growth
• Always too dry → nutrient uptake issues
âś… Watering check:
• Let pots dry properly between waterings
• Lift the pot — it should feel light before watering again
• No constant small sips
Autos want wet → dry → wet, not wet all the time.
⸻
🌡️ Environment looks mostly fine
• 23°C ✅ good
• 53% RH ✅ acceptable (could be slightly higher, 60% ideal)
So environment isn’t the main culprit, light intensity is.
They’re not sick, they’re stressed.
Back off the light, keep feeding light, and let the pots dry properly.
Autos don’t like being pushed early and please remember this is just my humble opinion please follow your instinct 👊