whats wrong with my leaves?

Hey everyone! So im experiencing an issue with a strain i have. Not sure what it is and could use some advice. At first I thought it was too much nitrogen because I have one strain starting to show the effects(real dark leaves, leaf curl). But with this plant im starting to see a little yellowing and few spot of necrosis. I'm in the fourth week of veg, using a soilless medium. My last two waterings were pretty high in ppms. I had it a 800 and then I backed off to 500. The leaves almost looked ruffled a little bit. I'm using 315s and the lights are about 2ft away from the canopy and the room temp is 77. Any advice is greatly appreciated. Thanks, happy thanksgiving everyone

Here's a couple more pics

Looks like a tiny bit of PH flux.

Bud Tipps said:

Looks like a tiny bit of PH flux.

Click to expand...

Thanks for the input, I'm leaning towards that but I think I started to over fert it

i think your ph is off and its locking out magnesium and to a smaller extent, calcium. you said soilless medium? coco?
ph to 6.1 if so, and give a couple of medium strength feedings of cal-mag, see what happens