You have to take the CalMag application rates with a big grain of salt. They assume you are using purified water of some sort and starting from NOTHING. If you are using tap water, you might not even need it, or only need very little. If you are running in coco, you might even need more!
You gotta cut back on your other nutes when adding a supplement so your ppms don't skyrocket like that- yikes!
stinkyattic Reviewed by stinkyattic on . Mag consumption chart I can't find the chart. Seems there was one on this site years ago. It showed the life cycle of the plant and how much is consumed at each stage. The reason I ask is I have a mag. def. with this strain I'm now working with (cheese). I believe it starts immediately after put into flower. Symptoms show at about day 7 or 8 (burnt leaf tips) and by day 14 I'll start to see the the interveinal nercrosis. I assumed CalMag would resolve this. So next time I'll start boosting the CalMag while Rating: 5