Been fighting rusting and leaf issues.
Looked exactly like a deficiency in cal mag.
But I see the plants on the outside where light is not as strong seem to be doing much better.
lm using Remo nutes. Kelp, micro, gro, magcal etc.
Ph at 5.8
Water temp 67
Ppm 1400
Week 4 veg
Lights: 70% at 26" -...