K0$her Ku$h help diagnosys

[isoprop]

SOIL:
How long has this problem been going on?
1 week
What STRAIN are you growing?
Dna Reserva Privada Kosher Kush
What was the establishing technique? (seed or clone?)
Seeds
What is the age of your plants?
23 days from seed
How long have they been in the soil mixture they are in now?
14 days
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before?
yes
How Tall are the plants?
20 cm
What PHASE (seedling, vegetative or flower) are the plants in?
2nd week vegetative stage
What Technique are you using? (SOG, SCROG etc)
LST
What size pots are you using? (Include how many subjects to pot)
18lt
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
Canna Professional
What brand Nutrient's are you using?
Biocanna
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
3/4 reccomended dosage per liter for the entire Biocanna line
How often are you feeding?
1 times a week
If flowering, when did you switch over to using Bloom nutrients?

What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
For now just BioVega and Bio Rhizotonic
What is the TDS/EC/PPM of your nutrients used?
I don't have an EC meter so i don't know
What is the pH of the "RUN-OFF"?
Never measured
How often are you testing pH/ppm/EC/TDS?
Testing PH every watering
What method of pH test was administered? Using Strips? pH pen?
Digital PH pen
How often are you watering?
2 times a week
When was your last feeding and how often are you feeding?
Last feeding 7 days ago, 1 feed per week
What size bulb are you using?
400w HPS
How old is your bulbs?
Brand new
What is the distance to the canopy?
30 cm
What is your RH Factor? (Relative Humidity)
60% with light off, 40/50% with light on
What is the canopy temperature?
19°C with light off, 24/26°C with light on
What is the Day/Night Temp? (Include fluctuation range)
19°C with light off, 24/26°C with light on
What is the current Air Flow? (cfm etc.)
Exhaust Blauberg 280 m3/h + Fan
Tell us about your ventilation, intake exhaust and when its running and not running ?
Exhaust & fan are running 24/7
Is the fan blowing directly at plants?
yes
Is the grow substrate constantly wet or moist?
fifty fifty
Is your water HARD or SOFT?
tap water's PH is 7.5/8
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Tap water corrected PH at 6.5
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?(Only if you have a tds pen)
Approx 0.8 EC
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?(Only if you have a tds pen)

Are you using water from a water softener?
No
Has plant been recently pruned, cloned or pinched?
LST'd yesterday
Have any pest chemicals been used? If so what and when?
No
Are plant's infected with pest's?
No

Hello guys i've got 5 Reserva Privada Kosher Kushs @ 14 days veg stage and they got some spots and I wasn't able to identify if they are overfertilized or they are just Magnesium or Calcium deficent plants, i attach some pics, please help me to spot thisproblem..thanks in advance

 

[Rainbowkid]

I would dbl check for spider mites there very very tiny....

 

[isoprop]

I think it was just an overfertilization, i didn't feed her for a while, 6 days, and now it seems she is recovered...no problem on new leaves...

 

[MynameStitch]

can you get some pictures without the hps light on? It's hard to tell the coloration of the leaves and this is very important, from the hps it hides the damage color and it's important to see it without interference.

also

What is the pH of the "RUN-OFF"?
Never measured
How often are you testing pH/ppm/EC/TDS?
Testing PH every watering

this statement is very confusing, because if your testing the pH ever watering, how do you not know what the pH is? Are you testing it, or no?

when did you start feeding this plants at how old?
Im going to take a guess at this for now, from the first pic you posted the edges are fringed and curled under looks like over fert, but without new pics I can't gurantee it, but it does look like it's over fed, 3/4 feeding at that small, depending on when you started feeding it, would have built up in the soil depending on how much water you watered, if ytou didnt water enough nutes would stay in the soil longer which can create a buildup..... but it looks a little hot to me from the way the plant is acting, from the pics you provided, my opinion I do not see spider mite damage.....

 

[isoprop]

can you get some pictures without the hps light on? It's hard to tell the coloration of the leaves and this is very important, from the hps it hides the damage color and it's important to see it without interference.

also

What is the pH of the "RUN-OFF"?
Never measured
How often are you testing pH/ppm/EC/TDS?
Testing PH every watering

this statement is very confusing, because if your testing the pH ever watering, how do you not know what the pH is? Are you testing it, or no?

when did you start feeding this plants at how old?
Im going to take a guess at this for now, from the first pic you posted the edges are fringed and curled under looks like over fert, but without new pics I can't gurantee it, but it does look like it's over fed, 3/4 feeding at that small, depending on when you started feeding it, would have built up in the soil depending on how much water you watered, if ytou didnt water enough nutes would stay in the soil longer which can create a buildup..... but it looks a little hot to me from the way the plant is acting, from the pics you provided, my opinion I do not see spider mite damage.....

Hi Stitch, first of all thanks a lot for answering and thanks for sharing your huge culture about cannabis, i've read dozen of your truly inspiring posts..thank you again. I attach 2 pics with the HPS off so you can judge better but they seems to be recovered since i didn't feed em for about 6 days (she was LST'ed). I test the PH of the water i give to my babies and correct it at 6.5 approx but i never tested the Ph of the "run off" from the pot. I fed them at the second week of veg stage, let's say at day 14 from seed at 2/3 reccomended dosage. I agree with you that it was an overfert, because i stopped feeding them and just watering for about 6 days and they seems to be recovered, see attached pics. I've got 18liters pots and i water when they need it, testing pot's weight and looking at the plants for some signals but yes, it's a little bit too hot there, i need to buy a new VK to put fresh air in the room, now there is just an extraction fan and a regular fan blowing air but no intake fan for now...i need to update!