Can anyone help?

I don't understand what is going on. I noticed a few leaves looked like this and I'm clueless of what it could be. Does anyone have any suggestions?

Nobody will be able to tell without any info like soil,nutes,light... feeding schedule...

promix for soil.
2- 600 Watt HPS.
Fox farm recommended schedule.

I've used this method for over a year now and this is the first time a problem has occured.

I would think nute burn or maybe nitrogen toxicity? But my experience is not all that vast either.

Bad phosphorus deficiency (red stems/brown patching) paired with nitrogen overdose (Dark dark green leaves,claws at end) caused by whack PH/overfed on nutes/salt buildups.

BuD_DizZLe said:

Bad phosphorus deficiency (red stems/brown patching) paired with nitrogen overdose (Dark dark green leaves,claws at end) caused by whack PH/overfed on nutes/salt buildups.

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Hihi ok,I was close'ish

BuD_DizZLe said:

Bad phosphorus deficiency (red stems/brown patching) paired with nitrogen overdose (Dark dark green leaves,claws at end) caused by whack PH/overfed on nutes/salt buildups.

Click to expand...

thank you very much for your help. I was absolutely clueless. what is the best way to correct the pH?

MadButcher said:

Hihi ok,I was close'ish

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any help is better than none. thank you!

I do my ph with a ph meter. I check the runoff. Some use soil test kits but I'm colorblind.

I'll definitely get right on it. thank you.

Curious for knowledge. said:

thank you very much for your help. I was absolutely clueless. what is the best way to correct the pH?

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with PH up & down, comes in little bottles.

Organic route is baking soda for up (sodium bicarbonate) and citrus juice as down.

What i can tell is you growing in lowish temps?, with highish humidity? 9which would be strange under a 600 watt hps (so maybe wrong here)

and that is a lower leaf , we need to see the whole plant! and the environment or we are guessing.

Cut your water back and reduce humidity.

are you still in veg? a leaf gives us not enuff info it could be a 1000s things.

need to see all the plants in whole

pic of set up and environmental info, current climate, in your room and outdoors

could even be oil burn for bugs but not enough info

over watering or lack of air in hydro gives that ridge or speed bump you see on the leaf

if iphosphorus deficiency, your PH will be too high, if in soil this is unlikely a ph issue due to the high buffering ability of potting mix.

If lts the very lowest leaves dont worry about it, new leaves show the current situation, old leaves show the problems in the past.