Hello this is my first post, and I need some help to try identify what this problem is. I was guessing a cal mag deficiency but was wondering what you think because i don't want to miss diagnose and cause further problems. Setup: ebb and flow pots , plants are in 6x6 Rockwool with hydroton at bottom of pot. Nutes: house and garden aquaflakes a and b, roots excelurator, multi zen, drip clean. I used to give them Cal mag before I put them in the Rockwool blocks but stopped once I started fully watering figuring the a and b aquaflakes had everything they needed. These are currently on their 3rd week under 1000 w veg after moving them from t5s Any help in advance is greatly appreciated! Edit: they are only on the newer fan leaves
What water are you using? What pH are you using? There's no such thing as a calmag deficiency.......it's either magnesium or calcium.
You appear to have a magnesium deficiency.......I suggest start using the calmag again. Your nutes and water may not have enough magnesium in them.