Help 911

hey guys i just changed my week 2 budding reservoir and ran into this popping up on 2 of my plants
Im thinking this is either a nuet burn or from roots being disturbed please help i need to fix this before it can get any worse + rep for tips nad help

Oh yea sorry forgot to mention its DWC in a 18 gallon toat with 6 plants

looks like nute burn...back off the nutes if you can. what is the pH of your res?

5.9 thanks i had a feeling i just got all the rest of the nuets i needed for the full botaincare cns 17 line up and first time it got all the bonus nuets and not just the base

looks like a bad magnesium deficiency...have that going on with one of my plants in flower right now. Was giving epsom, going also to get some calmag tomorrow.

I would flush them out and start back with fresh nutes at a lower ppm like 1/2 what you were doing

Looks like light burn. Did you lower your lamps? Did you spray them? If you keep your lamps as close as possible at all times, you may want to raise the lamp directly after a reservoir change. I have noticed sometimes when I replace my DWC unit with fresh nutrients, that they are extra light sensitive for a day, or at least a few hours. But I keep my lamps very close at all times.

It may be nutrient burn, but I have never seen nutrient burn effect a plant like that before. But then again, I have burned my plants very few times, and nutrient burn does not always look the same.