Browning on older leaves in veg.

[NickPapagiorgio]

Hey all, i grow in peat/vermiculite, and water with tap water + nutes. My pH and and EC look good (i check daily). However, on only one of my two plants, there's these new brown spots on the older leaves only. Not sure why it's happening on only this plant (the only difference between the two plants is that this one is closer to the fan). I can't really tell from all of the guides what type of mobile nutrient deficiency this could be. I know the leaves are dark green and curled a bit, so the first thought might be nute burn, but this browning pattern isn't consistent with that from my experience. Humidity is generally around 55 and temp is usually around 67-70F.

 

[NorthernOrganics]

What do you mean by checking your pH daily? Like a slurry test of the pro mix? Are you adjusting your pH frequently? In my experience, the leaves in question show signs of pH fluctuations and nitrogen toxicity. What flavor of nutes are you using?

 

[N1ghtL1ght]

warmer would be better
let it grow it's not unhealthy