Autoflower Myth Busting Thread

Atrain;2713943 said:

Ok fellow growers I wanted to share some info with ya on calcium and magnesium and the def that go along with them ESPECIALLY under LED and how they present themselves...

: Calcium (Ca) and magnesium (Mg) are two different elements required for plant nutrition. One, Ca, is immobile. That means it cannot be translocated (moved) through plant tissues. The other, Mg, is highly mobile in plant tissues.-

Understanding this is important on a few levels, including making a proper diagnosis. Because Ca is immobile a deficiency will only occur on the upper, or newer growth. Because Mg is so mobile deficiencies occur on the older, or lower growth.

Their appearances and effects are also very different, and while both elements play together and are required by the plant, they cannot be lumped together as a single deficiency. You can experience-both-a Ca--and-a Mg-, but they are not one and the same thing, not at all.


But that being said if you have one with LED the other will probably be soon behind... this is why 9\10 products are cal/mag suppliments together wich is why you will so often see folks say (including myself) "hey bro you have a cal/mag def"

These are beginning to show on my current Himalaya Orange diesel and this is her...

Upper Ca...

Lower and mid Mag..

Notice they both appear as rust spots but see with the Ca the leaves are a bit lighter green.


Here is the def chart we see so often but notice the mistake.. it says they are both mobile elements... but hey does it really matter? Grab yourself a cal/mag suppliments if you grow LED (even hps ) chances are you'll need it someday

Click to expand...