Seamaiden
Living dead girl
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Very interesting Sea..
But I think I have a CalMag deficiency.. im super late in flower & in mid bloom I ran out of CalMag so 4 a good chunk of bloom ive been running RO water with no added CalMag & im noticing very small rust spots on the top leafs.... I would of guessed that was a CalMag deficiency bcuz that usually happens 2 my calmag beast mode plants like True OG Kush that love calmag deep in flowering..
my leaf aint on the chart its nice & healthy green but with new rust spots<<<<Most OG Kush strains will do this late in bloom & I always thought they wanted more calmag..
i cannot agree on calcium being essential to weed growing after using jacks classics for months and never adding cal or mag to my plants.i run promix/coco with r/o water and im telling ya other than 1 or 2 plants that looked like they needed some help i never used the stuff on anythingand after those plants were gone i went months without needing calmag on anything.i just started feeding heavy on stuff that looked def and they pulled through fine.the jacks has plenty of mag but not a drop of calcium.so i would say the ratio for healthy plants is 1 to 100 cal to mag.theres something about the jacks classics that must balance shit out,maybe iron or zinc levels.but im back using ionic and a/n and i been forced to use calmag almost weekly again.This is on the right track, but not quite there. Cannabis absolutely needs both calcium and magnesium for the essential functions of their life cycle. In fact Cannabis can use almost as much calcium as the other macronuntrients whereas magnesium is not used in the same ratios. Calcium is vital in the movement of other nutrient molecules through the plant cells and tissues and for the integrity of cell structure. Magnesium is absolutely essential for the production of chlorophyll as it is the central molecule used in the formation process. So it is clear that both of these elements are essential for the best possible results from our plants. However it is the idea of applying the two together that may be the issue. (I personally feel that the reason CalMag products were produced as they were because the discovery of their importance in hydroponic systems was discerned at approximately the same time. So nutrient producers simply put them in the same bottle). Reaching toxic levels of calcium is easy to do, especially in soil. A toxicity of calcium will prevent other nutrients from being absorbed by the plants roots properly, so this issue may be misidentified as deficiencies of other nutrients. This to me is the main issue with adding calcium, it may quickly become too much around the root zone. Toxicity of magnesium is much less common, but if one is seen it will also likely react with calcium creating more problems. But deficiencies of Mg is not wholly uncommon but easily remedied with epsom salt or another magnesium supplement.
So while we can see that having both elements in the nutrient profiles being provided to the plants applying them together may in fact be an issue. As I said above using the products that separate calcium and magnesium is probably the best option for providing plants with both of these elements. The two elements may in fact react with each other, but potentially with negative consequences. This makes it essential to have both elements available in whatever is feeding our plants, whether it is the soil or a nutrient solution, but in proper proportion to one another, which is approximately 5:1 (Ca:Mg).
GhostFace, you likely have not had to use the CalMag additives because you are growing in a medium that has enough of each element available. The other option is that you use nutrients with a proper balance of the two elements. But one way or another you are providing these elements to your plants in an amount they can handle.
One other thing to take note of is that zinc deficiencies look very similar to magnesium deficiencies. So if you feel as though you are providing enough magnesium to your plants you may want to examine the levels of zinc in your feed or medium.
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