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Dr_Kush started grow question 4 years ago
Yellowing on lower, older leaves. Starts with crispy tip, curling downwards then slowly progress to the whole leaf. The leaves haven't started falling off yet but I feel if it doesn't get resolved soon then this will be the next step. Thanks for the help.
1st Indoor Grow - Kings Kush Autoflower
15 weeks
1st Indoor Grow - Kings Kush Autoflower Dr_Kush
Kings Kush Auto
18 comments · 4 years ago
Resolved
Week 6
Leaves. Veins - yellow between
Stick answered grow question 4 years ago
Hi @Dr_Kush! I would give it a good flush and lower the EC for the next meals, you may have created a lockout by adding too much nutrients in a short period of time. Also, make sure your ph-pen is correctly calibrated, a wrong pH could also explain these symptoms. Keep us up-to-date and happy growing :facepunch:
Experimentgreen answered grow question 4 years ago
Hey there the plants really made an amazing come back from last week. Well done. The only other thing I could've thought possible would've been a magnesium deficiency, which will show the burnt tips similar to a burn but will also yellow between the veins of the plant.
From most nutrient schedules I've seen, many of them list doing a flush at the end of the vegetative cycle, and again at the end of the flowering cycle.
They really do look great this week, keep up the amazing progress. :shamrock::v:
Removed answered grow question 4 years ago
What you are experiencing is nutrient lockout dues to excess feeding, looks like a textbook nutrient lockout due potassium excess, 2.08 EC (1040 PPM) is high even for flowering stage. Give it a good flush and stop all feeding.
With a 16 liter pot, you don't need additional nutes for quite a while. Don't add nutrients unless you see signs of deficiencies, a slight deficiency doesn't impair grow or flowering, but a nute burn is disastrous. Also 2 liter of water every day? are you sure? that amount of water should last you 5 or 7 days.
Michka answered grow question 4 years ago
Hey my friend, you have too much nutrients in your water, give her a good flush, then give her two days and she 'll be ok...
LumberjackBuds answered grow question 4 years ago
This looks like a textbook zinc deficiency. Zinc deficiency is usually a symptom of a greater problem. It looks like you are using a lot of nutes, I would cut that out for a week. Causes:
Over watering is usually the main reason
or lockout due to over nutrient use like potassium
Root problems such as bugs or rot
Not using the proper or quality nutrients when growing
RO water is missing vital trace elements with a PPM of 0
High PH soil (check your soil ph values )