Even with the Cal-mag addition something is awry if they're showing
what looks to be cal-mag deficiencies. The rust spots (calcium) and
twisting (ph, or Mg) in theory shouldn't be happening which makes me
think about the Grow-Micro-Bloom GH ratios. Even the Lucas formula,
which omits the Grow entirely, usually does not lead to cal-mag defs
as there is supposed to be enough in the Micro itself.
If you're wanderng closer towards a burn, I would reco dropping the Grow
down substantially and have at least as much Micro as the Grow.
Have you always had to add a few ml of pH up? I rarely have to use it and
even then just a few drops.
