These 2 points seem to agree with each other.
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I wasnāt exactly trying to experiment on thisā¦ but it looks like I did anyway. My last run, I finally ponied up for a bottle of OAC Cal-Mag from TPS. I couldnāt find any other organic cal-mags, so thatās why I chose this one. It states it also contains āa full array of micros including iron, sulfur, manganese, boron, and copper,ā but doesnāt give ratios on them; guaranteed analysis on calcium is 4.5%, mag 1.1%.
Before starting to use this, I ran my Frankenstein and GG4 once or twice. I ran into deficiencies as soon as I started flowering them, and using standard fertilizers didnāt help. I also had hollow stems. Clones frequently failed to root. All-around bad, basically. When I added this to my water, the deficiencies largely cleared up and clones started rooting more easily. I wasnāt paying attention to the stems because I didnāt care - but a few days ago, I took clones of each and noticed that they have thick, solid stems now rather than hollow ones.
Iām planning to continue experimenting and see whether liming the soil between runs helps as much, and whether I still need the cal-mag with it. Shouldāve been a no-brainer, since I have a rather large bag of garden lime in the garage for use on the lawn anyway, but my brain simply failed to engage and make the connection. Oddly enough, three days after I decided to try this, @Dirt_Wizard was kind enough to post this and validate my idea. 
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Iām happy to take the thanks for posting it, but credit goes to @HolyAngel for telling me that the book existed in the first place to find! Tiedjens is a fascinating guy who I want to learn more about, a really influential figure in American agriculture and especially home gardening for subsistence.
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I look at the stalks after harvest and most are at least 1/2 diamater hollow with 50%amber -50% milky trichomes BUT when I run a plant longer that the recommended harvest times I get all hollow stalk and most of the trichomes are amber
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That is what I noticed so far, this NLA that I cutted down had a solid base and on 6th node was like 50% hollow and about 50% ambar trics.
Will harvest another in a few days and will check it out.
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Thereās the General Organics Cal-Mag but I didnāt really like that one, too weak overall and I blew through it. I switched at the advice of some users here to using Botanicare Cal-Mag Plus, which is awesome and pretty cheap especially in the big jug, also nice and clear and not very smelly which is nice too. Probably one of the only things I still want to have around on the shelf for emergency pep ups, but Iāve been experimenting with Nectar liquid calcium and Epsom instead and that seems to be working well, I can make a similar product to the Nectar at home with a fulvic fermentation/digestion thing like they do. Shit stinks though, which has me thinking sometimes that I miss Botanicare. In general that looks like a pretty nice line of products that Iād consider for hydro or coco if I wasnāt cheap as hell and looking at dry salts instead.
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Botanicare seems to be synthetic salts, but for the same price as the TPS organic cal-mag. Think Iāll pass on that oneā¦ General Organics is slightly less expensive for the quart size, but contains nitrogen as well. Not sure whether I want to be supplementing with that in flower anyway. It also specifies on the back that itās ānot for use in organic crop and organic food production in the state of California,ā presumably because of the nitrates. I guess Caliās stricter than other states on that, but since Iām not exactly following state law anyway itās all about personal preference, and I prefer one that doesnāt have a non-organic warning right under the name.
Thatās why Iām also gonna try liming the soil and leave it at that. 
Less cost + less work = happy grower.
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Just be cautious of raising your pH with too much lime. Gypsum may be a better solution if you are already above 7.0 pH.
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@RoryBorealis posted this in another thread but i thought it would be interesting to get everyones take in here.
plot thicken???
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Whatās a cannabis again ?
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Is there a way to know if your stems are hollow without cutting them or x-rays or something? Forgive me if I missed it
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Sure. Thumb index squish
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If itās hollow it pops? If not it āsquishesā?
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Well it will cave in, sometimes with a crunch. If itās not hollow, it wonāt budge.
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If its hollow it will crush. If its not it wonāt crush. Crushing the stem wonāt stop the plant from growing. Just stake it up with a bamboo cane.
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They all ābudgeā tho, bent necks and bumpy knucklesā¦ Iāve always āpinch and rollā to tenderize before I make a bend, so as to avoid splitting and cracking, but breaking the apical dominancā¦I donāt think Iāve ever broken a branch that was hollow. I dunno Iām rambling
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All good, thereās degrees to this I guess. Iāve grown plants where softening a branch would require pliers and others I could make walls touch, literally an 1/8" thick.
I draw the line at 50% meat, nothing scientific here. Minimally hollow stalks is fine, paper thin is not 
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Iām wondering about something else, itās hollow stem adjacentā¦
Iāll try to formulate my question in a coherent manner but be warned I donāt English good today.
Why does some plants within a same line ask for entirely different feed regimen?
Similar growth, similar roots, same environment but plant 4 and 20 canāt stand N?
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I think Iām picking up what youāre putting down, I appreciate it bud 
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Different expressions require different appetites
Plants 4 and 20? I see what you did there 
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