Rolling leaf edges? Need advice!

Dgringo69

Dgringo69

Well-Known Member
Whats going on guys. For the last couple of weeks there has been a problem with rolling edges on the new growth of these plants. It also seems that overall growth has slowed. Any advice is appreciated. My specs are as listed.

Strain: Spacebomb, Spacebomb/Querkle
Style: DWC-non recirculating, 1gal buckets, healthy white roots, plenty of air
Room Temp: 70-75f
Nutrients: Reverse osmosis water,1-1-1 Ratio of GH Flora Series@4ml/gal, Cal Mag, ProteKt, =700ppm
PH:5.8
Photo period:18/6
Lighting: 4' t8 flouros that are 2ft. from the tops

View attachment 2904940View attachment 2904941
 
Dgringo69

Dgringo69

Well-Known Member
AimAim said:
Looks fine to me. Don't conjure up problems you don't have.
Click to expand...
Seriously? Did you look closely at the pics? There is definitely a slight problem. I mean..the plants aren't on their death bed but as a grower I shoot for perfection.
 
I

insub4u2

Member
Stop going for perfection, you'll stress yourself and your plants out. Looks like they are growing too perfect, better give them more. Seriously, they look fine, mine do that too, especially with growth spurts. Plants distort sometimes simply because they grow too fast, especially if you're running hydro. BTW, why are your lights so far away? Light is exponentially inefficient as they move further away, especially for young plants. I run my seedlings under 4 2 ft T8's, 1-2 inches above the tops, as soon as they break the soil. Heat is an issue where I am, and heat will cup the leaves, which is what you're describing. But I've run in the low 90's, with no significant issues, but if they get thirsty, they can curl fast, and they will cup until you get the heat back down.

url

Here's what heat stress, a common cause of leaf cupping looks like, for a comparison:

I have a hard time keeping heat down from May-Sep, and have had seedlings as high as 95, with no particular issues. But yours look like growing pains!
 
Dgringo69

Dgringo69

Well-Known Member
insub4u2 said:
Stop going for perfection, you'll stress yourself and your plants out. Looks like they are growing too perfect, better give them more. Seriously, they look fine, mine do that too, especially with growth spurts. Plants distort sometimes simply because they grow too fast, especially if you're running hydro. BTW, why are your lights so far away? Light is exponentially inefficient as they move further away, especially for young plants. I run my seedlings under 4 2 ft T8's, 1-2 inches above the tops, as soon as they break the soil. Heat is an issue where I am, and heat will cup the leaves, which is what you're describing. But I've run in the low 90's, with no significant issues, but if they get thirsty, they can curl fast, and they will cup until you get the heat back down.

url

Here's what heat stress, a common cause of leaf cupping looks like, for a comparison:

I have a hard time keeping heat down from May-Sep, and have had seedlings as high as 95, with no particular issues. But yours look like growing pains!
Click to expand...
Thanks for the advice. My room never reaches temps above 80. My lights are that far away because I get the same results as putting my lights right on top of the plants. I am not describing the cupping of the leaves. The edges of these leaves are folding back on themselves. I have never seen this before. The first pic displays the abnormality better than the second.
 
snutter

snutter

Well-Known Member
Dgringo69 said:
Thanks for the advice. My room never reaches temps above 80. My lights are that far away because I get the same results as putting my lights right on top of the plants. I am not describing the cupping of the leaves. The edges of these leaves are folding back on themselves. I have never seen this before. The first pic displays the abnormality better than the second.
Click to expand...

You REALLY need to read up on lighting, specifically how light disperses, and how important light (the correct light i.e. red / blue spectrums and UVB) truly is. You'll be very surprised when you learn how quickly 50,000 lumens can become 5,000 lumens being dispersed to your plants as you raise the lights away from them. It's the difference between 8 inches and 18 inches (or something close to that. I just threw those numbers out as a close approximation). You'll be very happy you took the time to read about this once you do. Cheers!
 
Dgringo69

Dgringo69

Well-Known Member
In researching my problem i have learned that low humidity can cause the problem im having. After learning this I checked my humidity level and it turns out my humidity level is around 30% which we all know is low. I'll be trying to hit 60% and we will see if the problem clears up.
 
LivingCanvas

LivingCanvas

Well-Known Member
They look fine to me. All your parameters seem to be good. Only thing I'd comment on is how high up
your lights are. Fluorescent lights do not have the intensity of the HID lamps, and as such are generally
suggested to be kept between 2"-4" above the canopy for optimum results.
 
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