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There are a couple of different scales for ppm so it can be confusing to compare. If it's working for you that's great. For me my plants would be...
A small bit less then I think as you dont need the extra cal/mag that coco needs.
I'm guessing you're in coco? I normally match the week multiplied by 100. So Week 4 about 400-450 ppm. This link suggests a little more though....
If you take pictures in white light it makes it easier to see any discolouration on the leaves. I've no experience with rock wool or DWC so I'm...
I've included more images in the original post. The plant at issue is on the left side of the tent in the full tent pic. It might be that it's...
It is the one plant closest to the heater. The top bud sites are the ones effected. Does heat stress cause something like this?
Apologies. I'll try later once the lights are on.
3 plants on the go at the moment and only having this issue with one. Colour discolouration of the leaves near the top, starting near the base of...
Looks like a potassium deficiency How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms
She looks hungry to me. I'm a coco coir grower so take this advice with a pinch of 'doesnt know what he's talking about'. From what I've read...
I'd suggest maybe a potassium deficiency (How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms) But that usually pops up in flowering...
Just double checking... you're using the Advanced nutrients trio of Micro, Grow and Bloom right? Not just AN Micro?
Try something high sugar with vitamin c like orange juice. Go to a doctor if you're still worried.
As Mick said it looks like nutrient burn. What medium are you in? If it's coco you'll be able to flush until the runoff hits your desired target PPMs.
Looks like a little nutrient burn and nitrogen heavy to me. What issue are you having with it?
So I was putting the yellowing down to nitrogen deficiency but the black tips has me confused. It started from the oldest growth so that means...
Looking good. It ll probably take another 5 or 6 weeks to finish. If you can get a microscope to check the trichomes it's the best guide,...
The never ending questions! What size container do you plant the seed into once its germinated? I'm guessing you used something quite big that...
Cannabis Grow Guide - Coco For Cannabis - Science and Practice Check out that site for loads of extra info on growing in coco. Just a side note...
What PPM is your water that you feed. It looks like nutrient burn to me. Those nutrient bottles always exaggerate how much you need to feed. Are...