djwillywonka
Member
New grower and coming towards 1 week before flowering. 2 plants has these brown spots and yellow looking leaves. Anyone know the reason for this ? How can I fix this ?
Is this a manganese deficiency?
- Thread starter djwillywonka
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Bukvičák
Well-Known Member
Hello, welcome to RIU. Can you provide more info like feeding schedule, medium and pic of the whole plant? It is always difficult to say whats wrong based on one leaf picture. Anyway I am pretty sure this is NOT manganeese deficiency...
djwillywonka
Member
Growing in coco coir with perlite, 70% humidity , 75 f, PH 6.8, 18/6 light cycle
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Bukvičák
Well-Known Member
Not experienced about coco, but your pH seems to be high, you should be 5,5-6,2. Also the leaf is saying pH issue. Check this page, can be helpful... https://www.cocoforcannabis.com/
MickFoster
Well-Known Member
Your pH should be around 6.0.
What is your feeding schedule?
Do you give plain water?
Do you allow the coco to dry?
Do you feed to substantial run off?
What is your feeding schedule?
Do you give plain water?
Do you allow the coco to dry?
Do you feed to substantial run off?
insomnia65
Well-Known Member
Run off is deffo very important, I did not do that in my grow and lock out every time