Coffee Monster
Sole Survivor
Thanks @water farm and @archie gemmill !
I'm still not sure I've got it Archie, but I've been pondering on it for months. A test strip I got said my city water was well above seven but I didn't think much about it at the time. The problems happen in bloom when the girls are drinking much more and the in-pot ph was occasionally caught above seven. And the girls have just been getting way too much cal mag for this many deficiencies in my book which suggested lock out. And @Waira stresses the importance of ph's role in grow problems so...
And proofs in the pudding! No probs this grow with any plants (so far) except for Fantasmo periodically tryin to throw a mag def. So...
I'm still not sure I've got it Archie, but I've been pondering on it for months. A test strip I got said my city water was well above seven but I didn't think much about it at the time. The problems happen in bloom when the girls are drinking much more and the in-pot ph was occasionally caught above seven. And the girls have just been getting way too much cal mag for this many deficiencies in my book which suggested lock out. And @Waira stresses the importance of ph's role in grow problems so...
And proofs in the pudding! No probs this grow with any plants (so far) except for Fantasmo periodically tryin to throw a mag def. So...
.. that it hits during transition is a hint-- a change in the plants needs, and a cumulative nute input issue maybe with this mixed-bag and schedule,... I have no way of assessing how much of each nute elements have gone in! It's a nute snarl in there, when it's better to KISS until you have better skills and more experience with nute' and soil tinkering,... A TDS/EC reading of run-off (from watering only) may help determine if you have too much stuff in there, borderline toxicity, and it's messing with uptake,... I see some mild nute burn symptoms....N-tox from earlier,... Only blanket solution I can think of is to flush with low ppm water, not pure RO/Di, but less than say 50ppm,... adding a little Ca-Mg to RO/Di is okay,... but measure the run-off ppm's as you go to see how well they drop,... 
Oh and thanks for confirming my suspicion I added too much lime as a factor
well, it's not a certainty mate,.. how much lime did you put in, and what kind? Lime is unusual, in that it won't raise the pH above 7-ish either, but this is a generalization... type of lime makes a big difference, and it's grain size,. near powder vs. sandy+ in size, large is slower to release,...pH condition will later this as well,.. and if it's dolomite, that's the slowest of all forms, as it's chemistry is a little different from, say, Ag' lime/garden lime which are mainly CaCO3, variable MgCO3, or "oyster shell", which is actually straight CaCO3 talek from marine deposits,... man-made stuff may be a mix of slow and fast release forms,... I'm still learning about Ca issues too, and it's been suspect in other cases at Sick Bay... I know it can become toxic at some point, but I can't find any info about specifics there,... whatever it is, it's very high, and before it became so, the amount of whatever is put in would FUBAR the pH way before then (carbonate/bicarbonate are the anions that are involved with pH buffering),.. however, at lower levels, but still "too much", it interferes with other cations uptake,...
right one's for the right jobs,... pH meter for liquids, probe for in-pot measurements, TDS/EC to measure water hardness, nute concentration, run-off salt load,... not something needed every day, but the info it gives governs other things,... if you run synthetic nutes, managing your inputs for pH before going in will go a long way to keeping soil pH stable! ... Mammoth P is a specialized inoculant, not a P source,.. and if your soil is salt loaded or badly off pH, it'll harm the entire herd, including Mammoth P's,... A PK booster is fine Coffee, but you're running blind here, and if the soil is nute/salt loaded already, adding more PK will make matters worse, not better,... hence the blanket flush fix! then, you can add more in gradually,... right now we don't know exactly what the problem is,..
