Leaf problems, please help!!!!

[isoprop]

Hi all I've got a problem with the leaves of my babies, any suggestion please?

How long has this problem been going on?
7 days.
What STRAIN are you growing?
R3d Di3s3l from B4rn3y
What was the establishing technique? (seed or clone?)
Seeds.
What is the age of your plants?
4 Weeks.
How long have they been in the soil mixture they are in now?
2 weeks
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before?
They were in an hydroponic medium (clay)
How Tall are the plants?
They are about 12 cm
What PHASE (seedling, vegetative or flower) are the plants in?
Vegetative
What Technique are you using? (SOG, SCROG etc)
Regular grow.
What size pots are you using? (Include how many subjects to pot)
Regular plastic pots, 11 liters.
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
Atami Janecomix premixed with perlite.
What brand Nutrient's are you using?
No nutrients added yet
How much of each nutrient are you using with how much
water? *Knowing the brand is very helpful*
No nutrients yet.
How often are you feeding?
No nutrients yet.
If flowering, when did you switch over to using Bloom nutrients?
Not flowering yet.
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
No nutrients yet.
What is the TDS/EC/PPM of your nutrients used?
No nutrients yet.
What is the pH of the "RUN-OFF"?
6.45
How often are you testing pH/ppm/EC/TDS?
I test the Ph of water and soil every time i give them water.
What method of pH test was administered? Using Strips? pH pen?
Ph pen
How often are you watering?
Every time they need it (testing the pot's weight and the soil humidity and looking at my babies)
When was your last feeding and how often are you feeding?
No feeding at the moment.
What size bulb are you using?
150W Fluo - 6400k - 15000 lumens
How old is your bulbs?
Brand new.
What is the distance to the canopy?
Lights are 5 cm from the top of the plants.
What is your RH Factor? (Relative Humidity)
40/67% with light ON - 70/97% with light OFF
What is the canopy temperature?
I dont know
What is the Day/Night Temp? (Include fluctuation range)
21-25°C at day, and 17-20°C at night.
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
No ventilation yet because it's not the final location of the growroom.
Is the fan blowing directly at plants?
No ventilation
Is the grow substrate constantly wet or moist?
Mostly wet
Is your water HARD or SOFT?
Tapwater is ph 7.8 corrected to ph 6.5
What water are you using? Reverse Osmosis (RO)? Tap?
Bottled? Well water? Distilled? Mineral Water?
Tap water that i let out in room temperature 24 hours before using.
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)
I dont know.
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?(Only if you have a tds pen)
Not using that.
Are you using water from a water softener?
No.
Has plant been recently pruned, cloned or pinched?
No.
Have any pest chemicals been used? If so what and when?
No.
Are plant's infected with pest's?
No

 

[Guest 263194]

get a fan blowing on her. stop overwatering. 1/4 nutrients.

 

[isoprop]

get a fan blowing on her. stop overwatering. 1/4 nutrients.

I will get a fan for them. I water every 5 or 6 days and I didnt gave them any sort of ferts...maybe my problem is the high RH values and low temps, avoiding to let the soil dry well and keeping it moist.

 

[Hydro-Soil]

5 cm is waaay too close, even for a 150w CFL... back it off to around 4-6"

That soil also seems to have a LOT of nitrogen in it. Is it the lighting in the pics or are those leaves REALLY dark green? I know you can't do much as it's 'in' the soil but thought you'd like to know if it isn't just the lighting.

Stay Safe!

 

[isoprop]

5 cm is waaay too close, even for a 150w CFL... back it off to around 4-6"

That soil also seems to have a LOT of nitrogen in it. Is it the lighting in the pics or are those leaves REALLY dark green? I know you can't do much as it's 'in' the soil but thought you'd like to know if it isn't just the lighting.

Stay Safe!

Hi Hydro and thanks for the answer! I added a fan blowing on them and raised up a little the CFL, now it is at around 8 cm from the top of the babies. I suppose the leaves are not so dark green, the pics are done with a cellphone so the quality is not the best, i'll try with a digital camera later in the afternoon so you can judge them better. Are you experienced with the substrate (Atami Janecomix Light) I am using or are you just supposing it has a LOT of Nitrogen?

 

[Guest 263194]

put it under 15cm or so. dark green = too much N which is good for veg tho. maybe light stress..

 

[Hydro-Soil]

15cm is better, yes

Nope.. don't know your soil but I know dark green is a sign of too much nitrogen. They get dark green enough and they start getting this really cool, soft and velvety feel to the leaves... bad for the plant.

Make sure the fan is gentle.

Stay Safe!

 

[Bio boy]

if ya small growing chek out the hempy buckets there simple and easy good results, but its easy to flush them and start over too, mite help ya as i didnt get on with soil too many problems and waiting games

 

[isoprop]

Hi guys I raised the CFL to 15 cm but one of my babies shows downward taco-like leaves. Is that a sign of N excess in the soil? You, as expert growers, would flush her? I will post pics as soon as i can

 

[Hydro-Soil]

Give it a couple of days and see if it's still folding up and whether or not the new growth looks good.

 

[isoprop]

Hello guys the situation recovered a little bit but the leaves are still "clawing" and one of them showed necrotic spots, pics attached...anyway the new growth looks good, what do you think?
Feedback really appreciated!

 

[Hammerhead]

clawing is caused by N toxicity or over watering.. Since you say you have not feed them yet im going with over watering ... The leaves that are clawed wont recover. Look at the new growth. If you see calwing from the new growth you still have a issue.. What kind of soil are you using??

 

[isoprop]

Hi hammerhead i am sure it's not overwatering, the soil is dry and i didnt gave them water from about 6 days...

 

[Hammerhead]

To dry and not enough food can also show this.. what kind of soil ??

 

[isoprop]

Atami Janecomix Light

 

[isoprop]

The new growth seems ok, look at the pics..don't you think? maybe, as suggested from other users, it could be an N excess in the soil..do you suggest to flush them or wait for other evidences of an N toxicity?

 

[Hammerhead]

I found info on that medium. I says up to 3 weeks with no nutrients. Looks fine right now but I would start feeding soon.. 6 days is a long time with no water. The longest I have wnt with no water is 3 days and thats when there young like yours. When full on flower I need to water everyday..

 

[isoprop]

Yes i followed the growshop guy and Atami directions, no feeding until three weeks. I will feed them at 1/2 dosage with BioCanna BioVega at the next watering schedule. I have high RH issues with lights off so the soil stay very wet for a long time and i wait until it dries very very well. Plants are not showing the need for water, anyway. As soon as i will see them asking me for water i will satisfy their needs. The last chance is too much N in the soil....

 

[Hammerhead]

Thats highly unlikely. I would fix the humidity. Thats just like over watering the plants can not transpire enough so the soil stays to wet. Get the RH% down to 40%

 

[isoprop]

RH at 40% with lights Off?