help, new growth is yellow and curling

K

Kronik707

New Member
I am growing in 65% coco and 35% perlite. My plants are from seed, water is 6.1 ph when I feed, EC is around 1.2 in veg. There is no deficiency’s in old growth. I am thinking it is broad or russet mites. Does anyone know what this is?
 

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Really can't tell if I see mite damage. Usually mites work their way up from the bottom. Looks like either general nute deficiency or iron or N.
 
What nutrients are you using? How often do you feed? How much runoff? Tap or RO water?
Looks like excess P/K issue to me and I see some Mg deficient leaves in there as well.
 
Ph is fine, so is the EC, the question is, how often do you feed? And do you feed calmag by any chance?
 
Kronik707 said:
I am growing in 65% coco and 35% perlite. My plants are from seed, water is 6.1 ph when I feed, EC is around 1.2 in veg. There is no deficiency’s in old growth. I am thinking it is broad or russet mites. Does anyone know what this is?
Click to expand...
Why would you assume bugs?

What are you feeding them?
 
That looks perfectly normal to me. The newest growth shoots are always a bit yellow at first, then get green when they grow out a bit more.

The 3rd picture from the left looks a little yellow, but that could be the angle of the photo.

Otherwise, I really don't see anything to worry about for now.
 
Creature1969 said:
What nutrients are you using? How often do you feed? How much runoff? Tap or RO water?
Looks like excess P/K issue to me and I see some Mg deficient leaves in there as well.
Click to expand...
Advanced nuts with Golden Tree, watering about 3 times a week, 20% runoff. Tap water. I think your rite. It looks like a excess of potassium which is locking out iron. I just flushed with ph water and it looks worse. Any more advice?
 
Kronik707 said:
Advanced nuts with Golden Tree, watering about 3 times a week, 20% runoff. Tap water. I think your rite. It looks like a excess of potassium which is locking out iron. I just flushed with ph water and it looks worse. Any more advice?
Click to expand...
You're treating your coco like a soil grow. I suggest feeding at least once daily.
I'm thinking some coco broke down and released a bunch of P/K while robbing some Ca and Mg from your feeds. It's the nature of coco. Frequent feeding to adequate runoff prevents that from becoming a bigger issue over time.
What's your tap water PPM? Are you adding any calmag?
 
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