Yellow spots, missing parts, I have found no mites/parasites/bugs under leaves so far

I honestly feel lost. First, I thought it was mag deficiency, gave it small boosts with epsom salt so I wouldnt cause a build up. Then it looked like calcium deficiency, so I gave it calmag and switched to ph corrected and treated tap water. I took leaf samples and looked at both sides under microscope, no signs of any bug issues.

so... what is my issue really? pleasw help :c

Super Silver Haze, 14th day of flower.
150W LM301H board, at full power, 40-45cm distance from the plant.
40-50% RH
24-28C temperature.

please help, i have invested too much hopes and dreams into this girl

Sure buddy but first give us more details, what is your medium ?
What water do you normally give ? I mean when you switched to tap, what was before ?
Also, when growing with LEDs, keep temps no less than 28c at lights on.
40-50 RH is nice and cozy at 26-28c, at 24c it can be slow on transpiration and nutrient uptake.
Your leaves are too green for me and the tops seem a bit over N...
What nutes do you use and in what qtys ?

DanKiller said:

Sure buddy but first give us more details, what is your medium ?
What water do you normally give ? I mean when you switched to tap, what was before ?
Also, when growing with LEDs, keep temps no less than 28c at lights on.
40-50 RH is nice and cozy at 26-28c, at 24c it can be slow on transpiration and nutrient uptake.
Your leaves are too green for me and the tops seem a bit over N...
What nutes do you use and in what qtys ?

Click to expand...

my medium:
-20% wormcastings
-30% perlite
-50% peat

my fertilizer is Advanced Nutrients Micro-Grow-Bloom set. i use them 2ml/L, for every watering. 10% run off.

water i used to use was bottled drinking water. now i switched to tap water, no fluoride in it. hard water, rich in calcium.

Ok listen, your pot size look ok for your plant size, 20% ewc is plenty enough to carry your plant almost to the finish without intervention from you
2mg is too much for that soil mix unless the plant shows otherwise
To fix your situation, give normal tap or bottled water pH to 6 if your in coco or 6.4 in soil
We go little lower on the pH in order to control N uptake a bit
Follow that with avg ambient temps of 28-29c
And you should be fine
Don't give anything to your plant unless you see a sign that it needs it
There's a way to build up nutes dosage even to healthy looking plants in order to boost them sort of speak but you will have to do it slowly over time and observing the feedback on each input you give
For now, plain pH water.

so is this an N issue?

I just watered her with 25C tap water, at 6.5pH (give or take, pH paper from merck), and adjusted the pH with GH pH down.

It's more of a toxicity issue, your mix is full of N from ewc, and you keep adding more N... This causes changes to the proper ratios of stuff in your mix effecting other elements, it's all connected at the end, Ca interact with N which interact with P and so fourth, maybe not the right order but you get the drift haha