hows the RH% in the room?
Medical Grow
- Thread starter Doc Bud
- Start date
The Lurker
New Member
Hey Doc, your two primary culprits for leaf curl-up are usually:
1) Light/Heat Stress
Easiest way to check this is to raise your lights by at least a foot for 2-3 days and see if it auto-corrects. Even if temps are ok at the canopy, light intensity may not be. That goes double for anything with a lot of blue in it, also.
2) Magnesium Deficiency
Also, are you using your tap water with the high PPM? And, have you checked your pH/runoff? I'm assuming you have enough Mg in your feeding schedule already, so nute lockout is a possibility if you're using tap.
Notes on Mg Deficiency and Leaf Curl:
If you've just got too much other stuff in your soil, flushing with RO water followed by a little Epsom won't hurt, assuming pH is where it should be. Don't overdo it with Mg feeding as that can cause lockout of other elements, also...
One way to test is to do foliar feeding of a few plants with RO/Epsom per the above, and monitor any changes vs. the control group.
---
Know that it could be a little of both of these, too...
Good luck!
1) Light/Heat Stress
Easiest way to check this is to raise your lights by at least a foot for 2-3 days and see if it auto-corrects. Even if temps are ok at the canopy, light intensity may not be. That goes double for anything with a lot of blue in it, also.
2) Magnesium Deficiency
Also, are you using your tap water with the high PPM? And, have you checked your pH/runoff? I'm assuming you have enough Mg in your feeding schedule already, so nute lockout is a possibility if you're using tap.
Notes on Mg Deficiency and Leaf Curl:
If you've just got too much other stuff in your soil, flushing with RO water followed by a little Epsom won't hurt, assuming pH is where it should be. Don't overdo it with Mg feeding as that can cause lockout of other elements, also...
One way to test is to do foliar feeding of a few plants with RO/Epsom per the above, and monitor any changes vs. the control group.
---
Know that it could be a little of both of these, too...
Good luck!
- Thread starter
- #183
You said the plant looks healthy in every other way, so it will probably work out fine. You may be pushing the plants a bit hard for the current root mass to support. Have you had a significant amount of new growth on this plant since being put under the current light and if so, does this leaf deformity still show on that new growth?
Hmmm,Hope you are OK. I hope you change your mind on those death traps soon.
Munki, that plant has grown like crazy since I got it. And yes, the new growth has the deformity, but not as much as the "next to new" growth.
The root system is probably pretty extensive....I had a clone that as put into a gallon pot a week ago that I had under my lights for a week.....the roots were extensive, and the deformed leaves are on a clone 2 weeks older....roots should be pretty good.
Whatcha thinking is the problem?
As for NPS, that's pretty sobering news a couple posts up.
I've never smelled mine or had any reaction at all, but if I ever do, I'll be done with that product for ever. I'm reconsidering my use of it as we speak.
- Thread starter
- #184
Hey Doc, your two primary culprits for leaf curl-up are usually:
1) Light/Heat Stress
Easiest way to check this is to raise your lights by at least a foot for 2-3 days and see if it auto-corrects. Even if temps are ok at the canopy, light intensity may not be. That goes double for anything with a lot of blue in it, also.
2) Magnesium Deficiency
Also, are you using your tap water with the high PPM? And, have you checked your pH/runoff? I'm assuming you have enough Mg in your feeding schedule already, so nute lockout is a possibility if you're using tap.
Notes on Mg Deficiency and Leaf Curl:
If you've just got too much other stuff in your soil, flushing with RO water followed by a little Epsom won't hurt, assuming pH is where it should be. Don't overdo it with Mg feeding as that can cause lockout of other elements, also...
One way to test is to do foliar feeding of a few plants with RO/Epsom per the above, and monitor any changes vs. the control group.
Know that it could be a little of both, too...
Good luck!
Great post, lurker.
I'll raise the light up and see what happens.
also, this soil was pre-conditioned with Gyspsum, Dolomite, Epsom, Borax
50-30-4-1 not much chance of a deficiency.
The soil is also very pH balanced, rich in peat and sweetened with Lime.
I've been diluting the hard well water mixing 50.50 with RO and pHing down to 5.8. The buffering ability of the soil should be able to handle that.
- Thread starter
- #185
50-55
Doc, are you running digital ballasts now? If you are, they do produce more lumens, and in combination with the bright Lumatek bulb, may be a lot brighter than your old setup.
As far as the NPS strips, there are people who are going to be more sensitive and less sensitive to any substance on earth.
Why would anyone stop using a product based on *one* anecdotal report of possible sensitivity?
I just can't get my head around that.
The great majority of people using the product haven't report any issues, so why would I think I would fall in the minority who might be sensitive?
Not saying Snowbender didn't react to the NPS, but statistically, most people don't, so chances are, I won't either.
I just don't get it. I think it makes a lot more sense to base decisions on statistical probability versus isolated personal anecdotes.
Sort of like someone refusing to have a life-saving surgery because their next door neighbor died having the same procedure, ignoring the fact that the actual risk of the surgery is less than 1%.
I had a very frustrating day today at work.
As far as the NPS strips, there are people who are going to be more sensitive and less sensitive to any substance on earth.
Why would anyone stop using a product based on *one* anecdotal report of possible sensitivity?
I just can't get my head around that.
The great majority of people using the product haven't report any issues, so why would I think I would fall in the minority who might be sensitive?
Not saying Snowbender didn't react to the NPS, but statistically, most people don't, so chances are, I won't either.
I just don't get it. I think it makes a lot more sense to base decisions on statistical probability versus isolated personal anecdotes.
Sort of like someone refusing to have a life-saving surgery because their next door neighbor died having the same procedure, ignoring the fact that the actual risk of the surgery is less than 1%.
I had a very frustrating day today at work.
HighWaterMark
Well-Known Member
re leaf curl: have you evaluated pots? Are air pots more susceptible to leaf curl? Just thinkin' out loud but wouldn't air-pots dehydrate their root structure faster than plastic buckets?
Now you got me thinking. Frightening.
Now you got me thinking. Frightening.
MountainHigh
New Member
When I first transplanted my SLH into my "hot" organic mix (used some basic amendments with a nice starter and my primary additive was Mater Magic), I had some twisting on my leaves...not exactly like yours though. I lime water flushed her a bit and she is happy as I have ever seen a plant in my cabinet so far. My twisting ended up being from low ph I think, but have heard of high levels of nitrogen being a culprit too.
Hope you get whatever it is solved brother!
Hope you get whatever it is solved brother!
- Thread starter
- #189
Regarding NPS....I've still got one hanging in the grow room, and have no plans to take it down right now.....but I still pay attention when someone tells a story like Snowbender.
A few days ago, there were 4 of us in the grow room, and I had 4 NPS out, for 4 days....and no one mentioned any smell or irritation at all.
- Thread starter
- #190
LOL! This plant is in a regular plastic pot. It's a very healthy plant, just got a bit of leaf curl. Everything is still green and growing.
- Thread starter
- #191
When I first transplanted my SLH into my "hot" organic mix (used some basic amendments with a nice starter and my primary additive was Mater Magic), I had some twisting on my leaves...not exactly like yours though. I lime water flushed her a bit and she is happy as I have ever seen a plant in my cabinet so far. My twisting ended up being from low ph I think, but have heard of high levels of nitrogen being a culprit too.
Hope you get whatever it is solved brother!
Hmmmm.....I've been pHing down to get the well water within spec as far as the TA goes....but there should be enough lime in the soil to deal with that.
There is no browning, spotting, or burning.....no sign of the Claw....interesting.
MountainHigh
New Member
I have some dolomite in my soil too but it is very slow release stuff and I was a bad boy and hadn't let my soil cook together at all (a month is what you are supposed to do)...has been doing that in the pot as the plant grows.
All those phing amendments take time as most are very slow release or slow acting, where I think my culprit was the initial release of nutes/etc. from the Mater Magic. Once flushed with fast acting hydrated/horticultural lime she has turned around, no more twisting and rapid growth during stretch.
Will see in a couple months though if Mater Magic (Organic Dynamite product) worked like I hoped.
- Thread starter
- #193
I have some dolomite in my soil too but it is very slow release stuff and I was a bad boy and hadn't let my soil cook together at all (a month is what you are supposed to do)...has been doing that in the pot as the plant grows.
All those phing amendments take time as most are very slow release or slow acting, where I think my culprit was the initial release of nutes/etc. from the Mater Magic. Once flushed with fast acting hydrated/horticultural lime she has turned around, no more twisting and rapid growth during stretch.
Will see in a couple months though if Mater Magic (Organic Dynamite product) worked like I hoped.
thanks bro!
I'll think about what to do, if anything, today. I won't need to water again till Friday....maybe I'll give 'em a dose of regular well water.....they've also gotten straight RO.
SnowBender
New Member
The theory about digi+super bulbs be a lot brighter than before is solid.
-not trying to turn your thread into a NPS debate. - so last on this subject from me here...
I took a peek in the closet last night for just a minute and again this morning, and both times my eyes started burning again. im going to go with munki's (wouldn't let me rep you...) advice and this will be the first and last time I use them , at least while growing. might use them when setting up a grow, before plants arrive. and still considering using in my roofless shed for short intervals during veg and prior to each years new grow.
I am a bit of a 'canary in a coal mine', and tend to react to environmental conditions more than others. I will actually get sick for 2-3 days after hanging harvested plants overhead for more than 5~6hours.
-not trying to turn your thread into a NPS debate. - so last on this subject from me here...
I took a peek in the closet last night for just a minute and again this morning, and both times my eyes started burning again. im going to go with munki's (wouldn't let me rep you...) advice and this will be the first and last time I use them , at least while growing. might use them when setting up a grow, before plants arrive. and still considering using in my roofless shed for short intervals during veg and prior to each years new grow.
I am a bit of a 'canary in a coal mine', and tend to react to environmental conditions more than others. I will actually get sick for 2-3 days after hanging harvested plants overhead for more than 5~6hours.
HorseBadoritz
Well-Known Member
High Doc, nice, clean looking grow and grow room. I've got a couple Jack's waiting for a CMH... they definitely want out of the tent!
Must be that reverse osmosis water... my leaves all curl the other way
Are you using a steady pH with all your waterings, or letting it change a little each time?
Doc, I bet the plant will be just fine unless you mess with it too much. Nature finds a way...
Would you fold aces because you once saw someone get beat holding them?
you don't win at poker without knowing and playing the odds. Making decisions based on emotion will empty your pockets real quick.
life's the same
soapbox mode/off
Look what I just saw in velodrone's "Velo's New Lair!" thread.
Here is the link.
https://www.420magazine.com/community/threads/velos-new-lair.125205/post-1168606
Problem look familiar?
Here is the link.
https://www.420magazine.com/community/threads/velos-new-lair.125205/post-1168606
Problem look familiar?
If losing the hand resulted in permanent damage to my health, then yes, I would fold and go play another game like Checkers!
If losing the hand resulted in permanent damage to my health, then yes, I would fold and go play another game like Checkers!
then you have missed my point, but uncharacteristically, I will not belabor it
Similar threads
