Rust colored spots on lower leaves?

This happened during my last run as well and Im just curious if anyone knows what it might be. It doesn't seem to have any effect on the overall health of the plant and its only on the lower leaf set on a few plants. Last time it only appeared early on like this then I never saw it again. Maybe from nutrient water getting on those leaves while Im watering? Those leaves feel really dry and you can see in a few of the pics they start cracking where the spots are. Not really worried about it, more just out of curiosity.

Always check for mites. They start at the bottom of the plant and you can get em in early veg.

Naw its not mite, like I said Ive seen it before and it shows up early like this but then completely goes away after this. It never spreads to new growth. Im wondering if it has something to do with my water. Its well water lots of cal/mag. It comes out at 110 ppm and its good water.. Just lots of calcium. I always adjust to just about 6.3. Or maybe its just water drops on the leaves from watering idk. Now that I think about it... It never shows up until I put up the hid lighting. Ive never noticed it with t5s

they just splashes off when they were little , the leafs just get splashedwhen watering . And you over feeding them way too much , they look TOO green and leathery

You may want to ease off the nitrogen for a while.

AnimalMother1974 said:

You may want to ease off the nitrogen for a while.

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nitrogen is fine, they aren't burnt, but have plenty. nice and healthy looking plants. no sign of n tox at all.

i agree with water spots. water on leaves with light on creates a magnifying glass effect. the water droplets will act as a reverse prism and focus light to a certain focal point, resulting in a 'sunburn' where the water droplets were.

everything looks great! keep doing what you're doing for now.

Theres no n tox they are fine. I feed h&g soil @ 1/2 strength. This strain just has really dark leaves. I thought the same thing but theres no other signs of toxicity. Its also been colder than usual which may attribute to the darker color.
Thats what I thought especially since its only the lower leaves where water may hit them.