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Plant issue

G

Golf278

New member
Hi,

does anyone know the issue here? I presume it could be a number of things.

My PH tester isn’t here until tomorrow and I’m going to get calmag now from the shop.

I’ve used biobizz nutes: grow, bloom, algamic & topmax.

plant is about a week into flower, been perfectly healthy until I spotted that leaf.

Thanks
 

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I'd say so overfed just slow down on the N of the PK more important. I would give it 2 plain waters before doing feed again. Allow to really dry out and go easy with different chemical ferts.
 
If you have a loop or some way to magnify to 30 or even 60x please look under the leaf coinciding with the spots. Looks buggy to me.
 
Golf278 Post that video/link for the gang. At 2 seconds left I see suspicious coloration. Looks fuzzy to me on the right side of the main vein. Younger eyes and more views will help dial it in.
 
I’m based in the U.K., using biobizz light mix, my ph is really close to 8 (I only got a ph reader yesterday, it’s one of those manual looking ones), on my next feed I’m going to use some ph down or vinegar to try and bring it down.
 
I use pelleted sulfur to control PH down, add it to the soil along with some pelleted dolomite (PH up) to buffer PH in the soil.
 
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