Brown spots on 3 week old.

[Lyonking]

These appeared very faint about three days ago. The plant is in 5gal Dwc.
I upped the nutes before I actually noticed them. I use lotus ‘grow’ and just added cal/mag to the mix @ 950ppm according to the feed chart at 3 weeks. I’ve seen posts saying it’s a cal mag def but not sure if that’s actually the problem. Any help would be great!

 

[ohigrow]

Hey there. Not 100% sure what’s going on just looking at what was posted. But I do see you have similar post about the same issue. Try to keep things condensed and avoid making multiple threads with the same issue. You’re more likely to get a response if you don’t flood the forums.