Help identifying problem!!

Hey guys here is one of my 2 Sugar Canes from Inhouse genetics grown in coco/perlite.

they have both been fed the same solution every time but this one seems to be a very finicky phenotype and isnt being very compliant this grow lol.

im pretty sure shes just hungrier than her sister (although her sister is younger,bigger and healthier) seems a bit strange.

I fed them a bit too strong of a nutrient solution about a week ago and the healthier plant got burned tips but not this one,so i gave them one watering of just P.H water with cal/mag. (With a good amount of runoff)

A day or two later she begins to show yellowing from the top down and from the stem outwards into the leaf,and new growth had slowed down. So today i watered them both with the base nutrient solution (flora) at P.H 6.2. Thoughts?

Looks like a magnesium problem

You gave a strong nute dose one week. then added cal/mag the next week. now your NPK and micro nutes are out whack. don't try to fix a strong nute dose by just adding some micronutes thats how you get lockout and toxicity because you have no idea what the ppms of your medium is without sending a runoff sample to a lab for testing. Next time flush and just give a lighter dose of nutrients. always add equal parts to your receipe don't just add 1 thing

Tib420 said:

You gave a strong nute dose one week. then added cal/mag the next week. now your NPK and micro nutes are out whack. don't try to fix a strong nute dose by just adding some micronutes thats how you get lockout and toxicity because you have no idea what the ppms of your medium is without sending a runoff sample to a lab for testing. Next time flush and just give a lighter dose of nutrients. always add equal parts to your receipe don't just add 1 thing

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Thank you for the reply!

Thats literally what i did though,flushed with PH water and calmag..then gave her a lighter dose of nutes.. and i always give calmag with feeding i just didnt give her nutes when i flushed hence the flush..

Can you identify what the cause is ?