day 37 flower is this calmag def?

day 37 flower strain Is critical kush feeding 800 ppm 1.6 ec few of the upper mid leaves are doing this look like they are fading and edges are orange

nope, not cal/mag. Gonna bet you're running bloom nutes that are high in p and k and low in N

N keeps things green.https://www.rollitup.org/marijuana-plant-problems/158144-never-ending-abuse-phosphorous-bloom.html

Nope its fine. Later flower fan leaf yellowing is good. Means there's not too much nitrogen.

more potassium than anything its advanced nutrients ph perfect connossuier

Too much N in flowering causes dark harsh bud. So don't correct this...

SnapsProvolone said:

Too much N in flowering causes dark harsh bud. So don't correct this...

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But, Just enough N keeps plants happy and healthy. I get more compliments on my bud since stopping bloom nutes and running 9-3-6 start to finish. I don't ph or measure ppm anymore. I get dense buds and lots of them.

any recommendations on when to stop adding calmag plus its 2-0-0 I use ro water advanced nutrients says there conno has enough calcium and magnesium in it have only been using it for light feed waterings should I stop now or a few weeks from harvest?

looks great man! Can you say enough about Connoisseur?! and AN, They look awesome, keep it up! what strain was this? ...by the way im having a cal mag i believe in my DWC, your leafs look just like they should at this point my brother, happy saint p day stay green!

Listen to Snaps. Its fine for the stage its in. At this point its common and natural for some of the oldest biggest fan leafs to begin to yellow. You got lots more leaves. Dont mess with something thats going like it should be.

there getting worse it kinda looks like maybe something more than n def but what do you guys think should I just not worry

sourdieselyumyum said:

there getting worse it kinda looks like maybe something more than n def but what do you guys think should I just not worry

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THIS HERE, It's fine.

I wouldn't worry too much about it. I also try to keep them green through harvest, but some strains just don't want to let you do that. If you want to do something, and you are doing soil, you can try making an EWC tea. I just bubble some water and add in some unsoldered blackstrap molasses with some castings. You can also throw in a little bat guano if you like, just keep it low. You still have a few weeks to go.

When I first started growing this occurance started to freak me out too so I started asking questions on forums like this and you know what I got? All kinds of claimed deficiencies and "give it this and give it that" and you know what happened? I burned the shit outta the thing, and the oldest leaves fell off anyway.
Its part of the process. Now there may be chronic extremes that would indicate something different but otherwise halfway through flowering to the end, the oldest fan leaves might just turn yellow and fall off. Once I'm down to the last few weeks, the buds are all I worry about. By then sometimes the only leaves left are some of the bud blades.

As long as it's the oldest/older leaves, and the leaves on the buds are staying green, you should be all good. Looking good so far!