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HELP! What's causing curly leaves?

B

bonghits4buddha

New member
I've never seen this sort of curling before, any ideas? At first the leaves were just a bit... wavy, but then the larger ones started to curl like you see in the picture. It's happening with two Kush strains, but the Haze thats growing alongside them seems unaffected.
They're in a hydro system, keeping the EC around 1.3-1.4. Using Calmag and silica supplements. At first I thought it might be too heavy nutrients, but I'm not seeing burned tips, discoloration, or other such signs. Only other thing I can think of is overwatering. I'll be letting them get a bit drier, and see if that helps, but if anyone else has other suggestions I'd be happy to hear them.


This forum is always so helpful and encouraging. A big thanks to all of you!
 

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have checked pipe not blocked orif both plant mutation ec 1.3 or1003 just asking my meter goes in 100s then 1000s
 
By having constantly over saturated rockwool. I find it weird that people think this can't happen in hydro, cause it's happened to me before.
 
Would you recommend a specific substrate? I like rw for clones, but I've considered additional material too. I used to use stones, but it made cleanup terrible, and I didn't see much difference anyway.
 
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