New grows curling on the ends with some strange marks on other leaves

Retailing

Active Member
I’m not at home at the moment and will not be back until tomorrow, This is my first grow and the only plant that has the problem. I think it’s nitrogen toxicity, am I correct? (I could only get 1 photo and the led is on, sorry about the quality)0F24AECE-3B6A-4DB0-9ADC-FC616F6AE945.jpeg
 

Renfro

Well-Known Member
Could be low pH in the medium. I have been seeing a lot of this lately. If the leaves end up with burn patterns that look like stripes then thats the likely cause (low pH). The medium pH is not always in line with the feed pH.
 

Renfro

Well-Known Member
Testing runoff will not provide an accurate indication. A good digital soil pH meter (not the cheap analog ones) is required.

The info you seek is here


and in several other threads that I have shared this in.
 
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