Ive reused soil without having bad results, but i tend not to. But once i have a grow going full swing the way i like to have it going, my only soil plants that arent outdoors, are usually clone mothers. They spend very long periods of time in the exact same soil. Im probably already going to have silicosis later on from a dumbass sand blasting job i had 10 years ago. Im pretty good on the perlite dust anymore tbh hahahahaha. My house is dusty enough already too.
I do have absolutely nothing against a good soil grow, and honestly, tend to prefer the smoke they produce, especially the super soil nugs ive had the pleasure of sampling.
I gotta be honest here, in 20 years of growing ive only seen obvious
cal-mag deficiency one time. And it was in a plant that had no business being anywhere but growing under the sun and right out of mother earth's face. As is being done this year lol. And tbh, im not sure if i ever even determined if that plant was just incredibly sensitive to reservoir ph swings and lockouts, or if it really did want all the
calmag i was giving it. Even at 450-500 ppm my ec would drift up and ph would drift down as a result. Anything above 500 ppm she showed nute burn. If i even looked in the direction of the flora grow, she'd cup her leaves and get shiny lmfao. That phenotype, outside in ground basically grew itself though, even in rocky clay rich soil with low organic content.
Tossing around
cal-mag, to me, is a lot like the constantly perpetuated myth about small light leaks (assuming thats still tossed around these days too, idk, but in my mind it's mainly just a way to curb complaints about breeder's products imho, was started for this reason, then the culture just picked it up and ran with it... notice the OPINION part if you disagree lol, but, originally, i think that it was a lot like the targeted oil company add campaigns to get people to blame themselves alone for the state of the fossil fuel situation world wide rather then holding fossil fuel companies at least partially responsible... that ad campaign worked too btw).
I can promise that if you have a plant throwing late flower stamen (bananas) under light enough stresses to even be considering small light leaks, you are dealing with a genetic predisposition to such, not a stress factor. Small light leaks, especially when consistent, are not going to cause you hermie problems. If they appear to be, either change up your genetics or look elsewhere for small stress factors, but i would recommend changing up the genetics, if late flower stamen bother you, before i would ever recommend hunting a snipe. Changing daylight hours schedule, now that can absolutely trigger hermaphroditic genes in later flower 100%, but those genes still have to be there. The very same impossible to grow land race i was talking about wont hermie, at all, even if you kill it while bouncing the schedule around. It just wont do it. The seed was *Fem seed too.
Once i get the dwc grow going again downstairs, i may make a little experiment thread to prove this point just for fun too.
Sorry im a sativa guy, tend to light up and begin rambling away.