Cal/Mg deficient? Quality pics!

RP Sour Kush, 3ft plant in 3 gallon ProMix, week 4 in bloom.

I water with pH 5.6-6.0, Botanicare CNS17 bloom for coco, AN BigBud, AN B-52, 5ml/gal CalMg.

I start with tap water, CalMg first then everything else, adjust pH and check ppm.

ppm always under 1200

The majority of this is at the top of the canopy, but it is moving down the plant. This sample was taken right off a bud site and yes, the stem is a bit purple.

RH 45% Temps 84-88

calcium deficiency/lock-out. check your local water report. your tap may have mag already.

I have my water report. No mag, no cal.

Honestly, I've been using CalMag very sparingly because I assumed my city water already had some trace of it. I'll just start using it more.

Think I'm locking it out with pH? I may have ran it around 5.4 for a couple days. Discovered that after recalibrating my pen.

I kind of run a mix ok coco and ProMix BX. Should I pH more like soil or hydro?

Not sure exactly what the problem is but have you flushed lately? Most problems can be fixed with a good flush. It sounds as if you have everything else dialed in. It could be salt build up causing lockout and a deficiency of some sort. I'd fix your ph and see if that helps as well. I've been using 5ml per gallon cal/mag forever and its plenty

Not too familiar with the botanicare nutrient but I don't see much in terms of micro nutes in your lineup. I see bloom and more bloom with vitamins and cal/mag. If you can't sort it out with a flush or adjusting the cal/mag I'd look into picking up something like gh micro or the AN version since you have some of their stuff in your line or something else of the sort, its got all the little nutes that your plants need. It def looks like a deficiency of some sort for sure

you have an advanced calcium deficancy,
correct ph of root zone, add cal/mg @ 10ml/g for the next 2 weeks.
reduce to 5ml/g for every watering.

after looking up calcium efficiency I agree with the guy above. Add more, do a quick google search and you will agree

Yep, thanks all.

I ended up doing a flush today. I had some darker leaves and some other spots, plus most of my leaf tips were a little burnt.

I'll be able to start a double dose of calmag in a couple days.

The good news is that overall, your other ions look dialed in. cn

PH 6.5 for mg/ca absorption. Doesn't like wet soil or high EC. Try not to overwater.

I usually water till I get a little run off (coco/promix), I'm not in soil.

Next time I water, I'll use some DynaGrow and CalMag around 600ppm and I won't water as much as normal. Shouldn't need water for 2 more days though.