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Can you diagnose this problem?

J

Jordog05

New member
Hi all, thanks for reading. My plants are roughly 4 weeks old, grown in coco coir/perlite/clay balls.
I'm still using 1/4 strength nutes.
They have been developing spots or marks on the leaves, and I'm completely unsure of the cause.
I've attached some pics to take a look at. Any help would be greatly appreciated.

Cheers!
 

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Looks like a bug problem but exactly what bug problem is a bit of a question. Spots on the leaves are often a sign of spider mites (I am currently battling those and my leaves look a bit different from yours). Another possibility is fungus gnats. Another possibility is slugs/snails. I would say look through the following page and try to identify anything that looks like your current grow. http://www.growweedeasy.com/bugs-pests-symptoms-marijuana-grow

Typically you can salvage your crop if you stop a bug problem early on. It looks like you may have one but I am curious to see other replies on this. Best of luck with it!
 
What is your ph in and coming out..
can you show pictures of the underside of the leaves as well..
Are you currently using any calmag..
 
ellz said:
Looks like a bug problem but exactly what bug problem is a bit of a question. Spots on the leaves are often a sign of spider mites (I am currently battling those and my leaves look a bit different from yours). Another possibility is fungus gnats. Another possibility is slugs/snails. I would say look through the following page and try to identify anything that looks like your current grow. http://www.growweedeasy.com/bugs-pests-symptoms-marijuana-grow

Typically you can salvage your crop if you stop a bug problem early on. It looks like you may have one but I am curious to see other replies on this. Best of luck with it!
Click to expand...

Thanks for the response mate. I've inspected the underside of the leaves thoroughly and can't see any signs of mites/bugs. I'll take a look at the link though. Cheers!
 
Green75 said:
What is your ph in and coming out..
can you show pictures of the underside of the leaves as well..
Are you currently using any calmag..
Click to expand...

PH has been a steady 6 going in. I'll measure the run off now and get back to you. Yeah I've been running Cal/Mag. Cheers man.
 
I agree with Green75 looks like calcium deficiency or ph fluctuation. I had a similar problem growing in coco, you really have to keep up with the calmag ......your plants might need a touch more. Good Luck!!!
 
carblevel said:
I agree with Green75 looks like calcium deficiency or ph fluctuation. I had a similar problem growing in coco, you really have to keep up with the calmag ......your plants might need a touch more. Good Luck!!!
Click to expand...

Yeah ok thanks for that. I've had a similar response from people on other forums. I'll measure run-off, adjust accordingly and up the Cal/Mag. Cheers.
 
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