I
Inspired333
This was looking (and still does) so good man. I hope everything goes well. I'd like to know what your air supply means are for the DWC as well. Also the P.H. and PPMs ya got. The first pic you showed of possible burn/deficiency looked familiar to my first "super unofficial joke of an attempt" at growing that I only did for shits and never left veg. That golden brown, hard smooth leaf tips (like all the points on any given leaf) look. Never did asses it, I had no means then - and I wouldn't feel right making a statement on what it might be. I can say that my water has virtually 0ppms (tap) and I never added any cal or mag. Some others here mentioned cal def. So JUST a thought bro.
Peace
Peace