Is calcium carbonate more easily assimilated by cannabis than calcium nitrate?

rkymtnman said:

what are your target ppm's for veg and late bloom? i saw your mid blooms. is that from end of stretch to last few weeks?

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I am literally now transitioning feed charts b/c I am now trying to pursue High Brix in hydro and because of that I jacked up my Ca and K while reducing my N, but here are both my feed charts. The first I had fantastic results with save for very minor Ca spotting and a tad bit of K def in low RH.



The blank spaces represent the same number as previous. All my targets returned perfectly except Sulfur. Perhaps I aimed too high for it. For reference, GH targets S to around 50ppm, Jack's 321 gets it to 100.

Here is the first revision in pursuit of high brix. I got a refractometer, but I am also now using a special PH meter to test the PH of leaf sap. Allegedly grape farmers do this to analyze their soil to make better choices with future crops. They also use other much more expensive meters, but I grabbed the PH one for 125.



Here is the targets for leaf sap PH.


If you would like to make any critiques to my high brix targets, I'd love to hear them. My leaf sap tested out to 6.1 PH. If the chart holds true, I need to get it to 6.4 and the only way to do that is to get all my macros and secondaries balanced just so that would produce a plant that would retain higher sugars in the cells.

rkymtnman said:

is that from end of stretch to last few weeks?

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Unless the growth I see makes me feel like I want to change sooner, I generally only do Late Bloom for about a week to 10 days before a brief flush. I just dropped a Cheese that did late bloom for 10 days and when I flushed her, she faded to full yellow leaves in about 3 days.

Skybound420 said:

If you would like to make any critiques to my high brix targets

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to be honest, i'm not familiar at all with brix and cannabis. i found these 2 links that i'll be reading and seeing what's up.

https://www.thcfarmer.com/threads/brix-levels-and-what-it-means-to-cannabis.88265/

https://www.thcfarmer.com/threads/high-brix-in-hydro-thoughts-facts-ideas-etc.81612/

maybe you should start a brix thread here instead of jamming this one up? i'll follow along

rkymtnman said:

maybe you should start a brix thread here instead of jamming this one up? i'll follow along

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I wasn't trying to jam this one up, I was seeking clarity for calcium carbonate for a hydro application. I'll check out those threads you linked, thanks but it's still premature for me to start a hibrix hydro thread.

Skybound420 said:

I wasn't trying to jam this one up, I was seeking clarity for calcium carbonate for a hydro application. I'll check out those threads you linked, thanks but it's still premature for me to start a hibrix hydro thread.

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i didn't mean you personally jamming it up but it's RIU after all, it will go off topic soon enough. lol.

i'll give those links a read too later today and tomorrow.

Has anybody tried mixing cali carb with vinegar to chemically strip out the calcium? The end result is called Calcium Acetate Ca(C2H3O2)2, and has the molecular weight of 158.16604 g/mol. I am hoping someone knows how to do the math to convert the molecular weight into mg/L(PPM)?