Hey guys, starting early flower at the moment and I’m noticing what I assume to be a calcium deficiency starting. I got what I could get my hands on quick and the best thing I could find was pelletized gypsum. Does anyone have any experience using the pelletized version and have any recommendations with feeding? Not sure if I should grind it to a powder and top feed, or just top feed as is, or even throw it in with a aerated tea? Open for any/every suggestion thanks!
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My only experience with it is mixing into soil prior to cooking. Pellets are slow to breakdown and release. For faster acting use something like fine Dolomite lime.
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Gypsum is used to “lubricate” substrates so that clumping doesn’t occur, though it does offer sulfur calcium. It is not necessary as a nutrient if you are using a balanced cannabis fertilizer. Using pelletized gypsum is ineffective for preventing clumping. Powdered gypsum is best mixed in soil before planting.
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Absolutely and since you have a Nutri-Bullet, (I hope that blender is only use for that purpose 
)grind it to a fine powder and dissolve it in distillate water, using your blender if you want a better mixing.
With that mix, make a dilution of 1:4 with distillate water for soil watering and a dilution of 1:8 for a fast acting foliar spray, do a foliar spray test first to some bottom leafs first, water spray wash after 5 to 6 hours if you don’t want to end up with leaf stains.
Gypsum is the neutral salt of a strong acid and strong base and does not increase or decrease acidity. Dissolving gypsum in water or soil results in the following reaction: CaSO4·2H2O = Ca2+ + SO42- + 2H2O. It adds calcium ions (Ca2+) and sulfate ions (SO42-), but does not add or take away hydrogen ions (H+). Therefore, it does not act as a liming or acidifying material. The Ca2+ ions simply interact with exchange sites in soil and sulfate remains dissolved in soil water.
From here
In hope that you will find this helpful @Easygrowin @MidwestGuy @dbrn32
Al 
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Ô, I forgot to mention, it’s 1:1 pellets and distillate water mix @Easygrowin
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Why not just use cal mag? Or any micro nutrient
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@GulfCoastGurilla That’s why! Read,read body…
However, it’s a good question, and yes he could…, I imagine it doesn’t have any with him and/or couldn’t find some in urgency and he turned to one of the next best thing to use for calcium deficiency, if indeed it is…
Gypsum is something i use. It needs time to work its magic so we often add it to outdoor grows in the soil before we plant so it has time to absorb into the soil. I said magic because to outdoor growers who have long grow seasons, gypsum is a long-term calcium provider, the best in many an old growers opinion.
The best option for a quick calcium adjustment is cal mag. Its cheap and works fast.
Good luck
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Sheetrock?
Sounds crazy i know
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