Quote Originally Posted by copobo
I've heard people say you don't need cal mag+ with Lucas formula, but I've found that to be bullshit. try 5ml/gallon or use tap water. (We have almost no Ca or Mg in our water out of the tap, so we need it anyway.)
Bingo. Cal Mag+ will very likely do the trick.
Faddenator Reviewed by Faddenator on . THC Bomb In Trouble I'm a bit of new to growing, and I hope some of you more experienced gardeners can help me out. I've done 2 dirt grows before which weren't unsuccessful, but there were certainly problems. I'm now doing my first hydro grow and I've got a sick plant. The Problem: A THC Bomb plant is in week 4 of vegging. Some of the large fan leaves, starting at the bottom of the plant, started to yellow between the veins. That yellow is turning to dead brown spots. Pictures attached. The Setup: 5 plants Rating: 5