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Just thought I'd add quickly. I had to flush the soil with water pH'd to 9 to get the soil pH above 6.5 to 7. Crazy how important a role pH plays.

PS I was pH testing the water I've been giving them. Even recalibrated my pen the last time I fed them. Between 6.5-6.7 every time I watered and fed them to achieve a range. Clearly the clay or something in the soil is lowering the pH. It's a home composted soil from my garden. I'll keep an eye...

Okay, my own stupidity for assuming this can't be a deficiency. I've overlayed the effects of extreme magnesium and calcium deficiency and the necrotic patterns on the leaves make sense. Spotting in the middle due to the lack of calcium and necrotic edges from the magnesium deficiency. I have...

Possibly EXTREME magnesium deficiency. But the browning should be starting from the points of the leaves then. But again, it could possibly be that severe.

To everyone above. Thank you for all the advice. Sadly it's not a deficiency, not a toxicity. Yes possibly light burn from the sun after it rains, but then it wouldn't be spreading when it's not raining. It's not pests because I've sprayed the plants twice in their lifetime. Especially under...

It's outdoor. And only after I noticed the discolouration and at night.

Hey, yea I did check. Wasn't that. Have also applied a general pesticide/fungicide and it hasn't had any effect.

Update. It's still not spreading to the very top leaves. The affected leaves remain healthy aside from the strange colour. The affected areas are dry and crisp, but not affecting the leaves negatively (obviously aside from effecting photosynthesis). It hasn't spread to my other pots and plants...

I also thought it was that. But the water I give it I pH to 6.5+- and the soil pH is between 6-7 depending on the day. I'm thinking it's maybe something in my tap water. Or possibly some kind of mutation, these are from seeds I bred myself last year and it doesn't seem to be affecting the plant...

Why thank you captain obvious. I was more concerned about cause and effect lol

Hey man, only the lower fan leaves. Not the younger leaves below them. And yes I am feeding, foliar and soil. And yes my pH is kept around 6.5 considering its a clay based soil. I can't find any deficiencies that look like this and it can't be light burn. It's almost like the leaves are rusting...

HEAR ME! HEAR ME! To all the cannabis aficionados out there! Wtf is this????? Help please <3 Plants are outdoor.

I did when I replanted them yes. The original premix contains 3 different Coco's apparently. I mixed it down with just regular Coco/perlite mix Also forgot to mention. I watered with water at pH 6.5 and once even 6 and still couldn't get my soil pH down.

PS can't get the video uploaded????

Hey everyone. Need some serious help here. Suspected that a hot premix I bought was causing nutrient lockout, then I transplanted them into bigger pots and severally mixed down the hot premix with a 50/50 Coco perlite mix. Still noticing a soil pH of 7+ in some of my pots and the plants in...

Good day all. Hope you're having a good one ✌️ So I'm busy growing in a 1.2x1.2m (4x4 Foot for you Americans) and using a sunmaster 600 watt dual spec bulb in a Gloria air cooled reflector on independent ventilation. I've currently got 12 clones starting out veg. I'm well aware of the...

Found the culprit. High amounts of worm castings and some bat guano in the premixed soil. Too much nitrogen ontop of my fucked pH. Awesome guys, thanks for the advice! ✌️

Nah that wasn't me. I'm someone else who's just kinda hopped in here with a similar problem. I'm using a premixed Coco base soil. Will get the ingredients quickly and get back to you ✌️

Haven't added any nutrients at all. Just pH'd water.