Nute burn/deficiency... help

hey gang,

So, I gave my 2.5 week old baby a light sprinkling of seabird guano (9%N-7%P2OS-4%K2O trying to keep it organic and this was the best available in my B&M in germany) and after about 12 hours, rust spots are forming on the "teeth" (i like to call them the side tips, or saw blade) the physical tip itself is not affected, and I know this is tough to diagnose without pics (i think that aspect of the site is still down?) and theres also a couple very small white spots that have formed, the leaves look healthy besides this, no curling tips, no burnt looking areas or anything else. im using and organic soil "universal-erde torffei" by comp-BIO (bio is organic in germany) not sure if you guys will be able to find the specs of this specific soil but the values are a bitch to decipher as they are in ranges per liter.

any help would be appreciated, its not sever, and im thinking its a K lock out? but honestly I have no effing clue.

Thanks team

BP

PS.

soil is roughly a 6.7 watering with ~7... RT is between 74-79 RH 44-53%

I know i know, but its the best I can do atm

I'm having similar issues, brown spots between the veins, along the side tips, Further gone leaves are twisting at the tips and getting crunchy, I was told to flush then feed calmag( assuming it's a mag isssue) it sounds pretty similar to my situation right now, is there a source of mg in your nute mix?

ph get it to6.5 when watering , eventually the soil will start to run off at 7 if u keep the water at 7.
basically for soil , water mixture should be set at 6.5 and ur running off be 6.5. Invest in a bluelab replaceable ph probe or any ph measuring device

you overfed them, you fed them too much too soon, they burned now, transplant into a larger soil container and feed water, some lighter ferts too for a bit after she heals.

@chemphlegm

they pulled through that, but now the new growth seems very light green, i wouldnt say bleached and im only rocking two 140 actual draw LEDs,

but its almost patterned up the leave with dark areas forming vertically like: >>>> or
^
^
^

soooo, here are some pics, sorry for the poor quality ones didnt want to go through and trim the heard. hard to tell from these pics, maybe in daylight it will show up better, however, the larger and fuller plant is showing some weird signs on the new growth... noticed some slight nute burn so flushed both babies and the first recovered much better than the second... was convinced this was a cal/mag related issue, so gave them both a very, very light dose of some generic calmag. any input would be greatly appreciated!! not sure whats going on with the second plant, didnt even bother taking it out from under the LEDs becuase to me, it looks toast. but maybe its saveable, not really sure. i did to some early trimming on the lower nodes on both of these babies including fan leaves.. not sure if that was a tad premature, just wanted it to push upwards a little quicker.