Help with diagnosing spots

Amnesia Auto from Seedsman in coco, second week into flower. Plant showed nute burn at new growth, so I flushed with flashclean and started feeding diluted flora flower mix + fulvic + bio bloom + Si. Yesterday the top leaves were drooping and today I noticed these spots that seem to have developed overnight on a few locations, most of the plant looks healthy. Could it be Cal/Mg deficiency? I have a Glueberry Auto from Dutch Passion on the same nute schedule and she looks fine.

How's your PH? It would be good to know the EC or PPM too. I don't know your nutrient line but are they getting any Nitrogen? It's too early in the flowering stage to cut out N, IMO.

SheeshM said:

How's your PH? It would be good to know the EC or PPM too. I don't know your nutrient line but are they getting any Nitrogen? It's too early in the flowering stage to cut out N, IMO.

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I think the nute burn was caused by excess nitrogen, leaves were quite dark and new growth burned. I've kept inflow PH between 5.8-6 with max EC 1400 (dropped to EC 1000 after flushing, 60% strength of the manufacturer feed chart). Outflow has been super low for some reason, around EC 450-500.
I use GH Flora EU version, I think Micro has enough nitrogen and I haven't cut off Grow yet.

snekonomics said:

I think the nute burn was caused by excess nitrogen, leaves were quite dark and new growth burned. I've kept inflow PH between 5.8-6 with max EC 1400 (dropped to EC 1000 after flushing, 60% strength of the manufacturer feed chart). Outflow has been super low for some reason, around EC 450-500.
I use GH Flora EU version, I think Micro has enough nitrogen and I haven't cut off Grow yet.

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Sounds like ph and ppm are decent, maybe it is the start of a CA deficiency. Adding cal-mg may help There is a pretty good article by Canna Coco that talks about coco, CEC and deficiencies.

Looks like calcium, from the spots. That other leaf with lightening between the veins would be magnesium.
drooping leaves could be a ton of shit but not your cal/mag causing that.
good luck bud, don’t over water! Number one tip

You have a leaf that to me look like thiswell it looks like it to me as always thank you for your time and the opportunity to learn more about growing and the best of luck

Looks like nute burn to me, you gave nutes got nute burn then this appeared says it all.