Potential causes and fixes for magnesium deficiency

I dont think your giving enough cal mag buddy that's what it looks like to me :) Rest of the plant looking healthy doing a great job keep up the great work :)

it's not jsut about adding it, or even adding more of it... it's about adding the right amount that matches rate of growth, otherwise you run into deficiencies or toxicities. if soilless this is easy as pie. Simply give 70-85ppm of Mg and adjust as needed as part of a well-balanced 1,3 to 1,5 EC feed, give or take. Some rare ones will want more or less. in soil it's still adds up to the same mass added over time, except you have the unknown of what's in the soil. Also foliar sprays are great while you are having an issue, but if you properly feed a plant through its roots, there is no reason to do so on a regular basis. it's a great technique to quickly provide some nutrients locally -- not all of the molecules fit through the stomata. i don't foliar feed so i don't memorize such things. reference material is made to be referenced. there are other considerations. A pH swing could make Mg less available even if you are giving enough molecules of Mg. Antagonistic relationships with K goes both ways .. add either and you reduce availability of the other... after a certain point. existing concentrations and pH play a role in where that threshold is too. ... with Calcium, if you add too much of calcium it'll lockout Mg. this one doesn't go both ways. Stimulative relationships: Nitrogen -- add more and you need more Mg than before Phosphorous -- goes both ways.. add more of either and you need to add more of the other (or if less added than before, less of the other than before too) This stuff is fairly complicated and why you see so many seemingly similar environments with different needs and potential. A 7:8:15 ratio of NPK (may need varying levels of N) with the other 3 secondary nutes totaling roughly 1,3 to 1,5 EC is essentially giving the plant all it needs on demand relative to good growth and ambient co2, and temps/rh that avoid extremes. you can probably get faster growth rates with more control, and you may need a higher concnetration of a well-balanced diet too.

Epsom salt will be your best bet. Its the best source of mag/sulphur you can have for a plant. You can use as a foliar spray. Itl work much better than a calmag spray as with many calmags. There are a good few nutes in them. So i like to use 1 fix for an issue. Not throw the whole kitchen sink at it. But that's me. I just find it much much better as a source of mag/sulphur. "If you do have an Epsom salt. Make sure its one NOT WITH ANY smellies in it like Aloe Vera or mentol" Depending on your ambient ppm of your tap. You should be looking to add 140-200ppm to your tap. So, if your tap is 100 your ppm feed with Epsom salt either direct into sub or foliar spray, "if used as a spray, dim your lights for a few mins" you'll be surprised at how fast an Epsom salt feed soaks in. You should start seen an improvement with days. Feel free to DM me more on this.. Good Growing