Papery leaves, plants dying, please help!

[roboquaid]

Hi guy's I've been doing little bits for a fair few years now and the past year I've not been able to complete a full grow because of this 1 problem and I cannot work out what's going on.
I'm scratching my head in desperation trying all different things but whatever I do to make improvements my plants will take a turn for the worst just randomly and start dying until they quickly become shrivelled and lifeless.
Before any of you guy's ask about my growing environment its 100% perfect.
I'm using a recirculating nft system, with airstone in the reservoir, my ppms are 850, pH 5.8, temps between 20-25c, rh average of 55-60.
Lights were 2x Mars hydro ts 3000 in a 1.2m x 2.4m tent.
This is what happens to my plants, they will start to look like the leaves are heavy, like they're full of weight and drooping over almost like they're over watered and the leaves are full of water?? But at the same time the leaves feel dry like paper!
Very dehydrated feeling with no moisture to the touch.
Eventually the leaves will be so droopy and so dry they will crisp into dust.
Surely Someone out there has seen this before?? I'm beginning to think it's some kind of plant disease maybe in my environment??
My plants should be very healthy as every parameter is spot on yet they are dying mysteriously every time!
I notice that the veins of the leaves look very dark like purple and the leaves going lighter in color before they wilt away and die.
This is very frustrating and really messing with my mental health.

 

[Killaki]

Hi guy's I've been doing little bits for a fair few years now and the past year I've not been able to complete a full grow because of this 1 problem and I cannot work out what's going on.
I'm scratching my head in desperation trying all different things but whatever I do to make improvements my plants will take a turn for the worst just randomly and start dying until they quickly become shrivelled and lifeless.
Before any of you guy's ask about my growing environment its 100% perfect.
I'm using a recirculating nft system, with airstone in the reservoir, my ppms are 850, pH 5.8, temps between 20-25c, rh average of 55-60.
Lights were 2x Mars hydro ts 3000 in a 1.2m x 2.4m tent.
This is what happens to my plants, they will start to look like the leaves are heavy, like they're full of weight and drooping over almost like they're over watered and the leaves are full of water?? But at the same time the leaves feel dry like paper!
Very dehydrated feeling with no moisture to the touch.
Eventually the leaves will be so droopy and so dry they will crisp into dust.
Surely Someone out there has seen this before?? I'm beginning to think it's some kind of plant disease maybe in my environment??
My plants should be very healthy as every parameter is spot on yet they are dying mysteriously every time!
I notice that the veins of the leaves look very dark like purple and the leaves going lighter in color before they wilt away and die.
This is very frustrating and really messing with my mental health.

From what I see and read it seems like it's possibly a root issue. And that's causing and uptake problem, thus the plants wilt and turn crisp because they're not receiving what they need from the roots.
What's the root ball look like to confirm?

 

[myke]

NFT , can we see pics of system.My first hunch is roots arnt fully submerged thus not enough air.
A friend ran pails on a table with res on the floor,bulkheads were low so no water in the bottom.We raised the bulkheads so now theres 8" of water.Problem solved.

 

[Billy the Mountain]

LIkely unrelated to your current issue, but 2 SP3000s is not enough light for flowering in a 4x8 tent.

The SP3000 is a great light but you need a few more for 32 square feet of coverage

 

[myke]

LIkely unrelated to your current issue, but 2 SP3000s is not enough light for flowering in a 4x8 tent.

The SP3000 is a great light but you need a few more for 32 square feet of coverage

View attachment 5057544

I can grow a healthy plant with 50 watts,amount of light isnt the issue here.

 

[Killaki]

I can grow a healthy plant with 50 watts,amount of light isnt the issue here.

I mean I could but I doubt I'll be trying any time soon. I agree though, it didn't really look like a light issue to me.

 

[Billy the Mountain]

Agreed, the lights aren't causing OP's current issue, something to keep an eye on come flowering time.

Clearly "every parameter" is not "spot on" and the environment is not 100% perfect.

What do the roots look like??

 

[hotrodharley]

Your temperature is way too low for LED. Your humidity too low. Your pushing 850 PPM with plants not ready to take it up under LED.

 

[myke]

Just a thought but what about, Hop latent viroid.
https://www.cannabisbusinesstimes.com/article/cannabis-hop-latent-viroid-infections-dark-heart-nursery-crop-loss/

 

[BigGreenThumb]

Your temperature is way too low for LED. Your humidity too low. Your pushing 850 PPM with plants not ready to take it up under LED.

Ive been growing for quite a few years and just started using LED for the first time. I thought I had everything dialed in, temp between 70-75 and rh around 50 only to find out it’s not the same as using HID.. I’ve always used HID and the battle would be getting rid of heat… now I have to figure out how to contain it
My plants looked the same but worse and I couldn’t figure it out. I started raising temps and humidity according to VPD charts and things are starting to slowly look better

 

[myke]

Your temperature is way too low for LED. Your humidity too low. Your pushing 850 PPM with plants not ready to take it up under LED.

Ive grow in low temp, low humidity with led.Plants still produce,maybe not perfect but leaves dont die off.
From what the OP is saying is plants are dying ? Maybe Im reading it wrong?

 

[hotrodharley]

Ive been growing for quite a few years and just started using LED for the first time. I thought I had everything dialed in, temp between 70-75 and rh around 50 only to find out it’s not the same as using HID.. I’ve always used HID and the battle would be getting rid of heat… now I have to figure out how to contain it
My plants looked the same but worse and I couldn’t figure it out. I started raising temps and humidity according to VPD charts and things are starting to slowly look better

I've discovered the same thing having switched to LED earlier this year. Especially about the heat. Seems to go against what we've always done to fight it. Now we need it.

 

[hotrodharley]

Ive grow in low temp, low humidity with led.Plants still produce,maybe not perfect but leaves dont die off.
From what the OP is saying is plants are dying ? Maybe Im reading it wrong?

Those pictures don't show a dying plant but an unhappy one instead.

 

[myke]

Those pictures don't show a dying plant but an unhappy one instead.

Yeah not sure,leaves go dry and fall off he said.

 

[Killaki]

Those pictures don't show a dying plant but an unhappy one instead.

I mean, I think the consensus here is that the roots aren't able to give the plant what it needs, but the op did say in the thread name "plants dying" and the post read like this isn't the first time this has happened.

 

[hotrodharley]

Yeah not sure,leaves go dry and fall off he said.

If the leaf and the stem they're on fall off easily it's a nutrient problem in his case almost certainly. They're not burnt looking at all. Suggesting a deficiency in something.

 

[hotrodharley]

OP, how stable is that 5.8 pH? How often do you check res pH and EC? And are you measuring solution temperature at all?

 

[roboquaid]

NFT , can we see pics of system.My first hunch is roots arnt fully submerged thus not enough air.
A friend ran pails on a table with res on the floor,bulkheads were low so no water in the bottom.We raised the bulkheads so now theres 8" of water.Problem solved.

I don't have any pics of the res but it's all working good, I have some in pots of coco/soil mix too and it's the same thing going on which leaves me to believe that it's an environmental factor??
Thanks for the reply though

 

[roboquaid]

I can grow a healthy plant with 50 watts,amount of light isnt the issue here.

Yep they're not sp 3000 but rather ts 3000.

 

[roboquaid]

OP, how stable is that 5.8 pH? How often do you check res pH and EC? And are you measuring solution temperature at all?

PH is very stable and will only fluctuate 0.2 between res changes.
I'm starting to believe that maybe the plants aren't transpiring properly and holding/retaining too much water, similar to overwatering?