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YeOldeGrower started grow question 4 years ago
Hi guys, could anyone help me? i have no idea why my leaves of one of my plants is turning yellow. I already am giving more nutes and started this week with Vita Race. Do you have any idea why my leaves are turning yellow?
Moby Dick XXL under 400w HID
8 weeks
Moby Dick XXL under 400w HID YeOldeGrower
Moby Dick XXL Auto
21 comments · 4 years ago
Week 3
Leaves. Other
FlavoursUk answered grow question 4 years ago

Don't over do it with the nutrients as its not reversible, nor wise. A lot of problems can come with overfeeding. Its the older growth that is affected which is pretty normally as they're most likely the leaves not receiving any light through the canopy. The only time you should worry about yellowing leaves is if its the middle of the plant or new growth, but from what I see its all old growth. You've got nothing to worry about. Do a bit of your own research and you'll see this for yourself. Good luck.
Experimentgreen answered grow question 4 years ago
If youre lower leaves are affected and its the whole leaf it can be nutrient burn, if you get new growth yellowing at the base not the tips that typically showing a deficiency. I know magnesium deficiency and other micro products can start at the base too so, either you may need to add in a cal mag supplement, but also look into the ph of water/over or under watering/ root problems. A good flush is always good too when youve begun a nutrient schedule.
Happy growing.
Removed answered grow question 4 years ago
According to your info you are using soil as your grow media? What kind? I looks more like coco than soil to me.
If you are using quality soil, a 15 liter pot should not need any feeding for 8 to 10 weeks, almost all of the run for an autoflower.
Since you are not posting info regarding pH, that's the first thing that I would think that could be an issue, specially if you are using tap water.
That been said, the first pair of leaves usually turn yellow once it stops receiving light, due to the upper leaves casting shadow on it.