The highest I went was 750 ppm and that was way too much. I currently keep it around 500-550ppms. i try to keep it closer to 500 plants have been happiest there. I did start adding another 50-60 ppms of Cal/mag. I had a cal/mag issue with one plant so i figured another 50 ppm wouldn't hurt. I use no other supplements.
Here's my biggest mega fed plant so far
Here's my biggest mega fed plant so far
Looking good pop.
You say you never went over how much ppm when using MC? Did you supplement anything else?

