Yellowing leaves, spots, and edges curling up

Big Z

Big Z

Member
My setup:

4x4 grow tent
600 watt mh
plants in 1 gallon buckets
Soil is ocean forest
Age: 3 weeks 2 days old.
Average room temps during day: 75-81 degrees
Ph of water adjusted to 6.2

Problem:
Out of the 7 plants I have in my tent one is displaying yellowing around the outside of the leaves and some of the edges are curling up as well as down. Also noticed today that the specific plant is developing some small tan spots on the leaves. Any ideas? Have not seen any presence of an insect infestation constantly check leaves bottoms and tops of leaves with microscope. Also on the other plants some of the bottom sets of leaves are yellowing as well. I just transferred them into ocean forest soil 1 gals about 4 days ago and have not fed them nutrients from the start of their growth. I was planning to feed them their first nutrients there next watering here in a day or so. Any ideas?






 
bf80255

bf80255

Well-Known Member
Big Z said:
My setup:

4x4 grow tent
600 watt mh
plants in 1 gallon buckets
Soil is ocean forest
Age: 3 weeks 2 days old.
Average room temps during day: 75-81 degrees
Ph of water adjusted to 6.2

Problem:
Out of the 7 plants I have in my tent one is displaying yellowing around the outside of the leaves and some of the edges are curling up as well as down. Also noticed today that the specific plant is developing some small tan spots on the leaves. Any ideas? Have not seen any presence of an insect infestation constantly check leaves bottoms and tops of leaves with microscope. Also on the other plants some of the bottom sets of leaves are yellowing as well. I just transferred them into ocean forest soil 1 gals about 4 days ago and have not fed them nutrients from the start of their growth. I was planning to feed them their first nutrients there next watering here in a day or so. Any ideas?






Click to expand...
was it a clean transplant? minimal stress? were they in the same soil before transplant? what are you feeding them?

could be N because the dicoloration and clawing but I cant say if its too much or too little till I get more specifics. probably N deficient tho.
how are you adjusting pH?
 
OldMedUser

OldMedUser

Well-Known Member
High Big Z

The new growth looks healthy enough but with a look at the full size pic it looks like dried up minerals on the edges of the older leaves.

Do you spray your plants at all because that's what comes to mind. Regular misting of established plants washes some nutrients out of the leaves and the older leaves will show that first.

Are you using that Ocean Forest at full strength maybe. I don't use it but have often read in other threads that people are warned that it can be pretty hot and can cause nute burn with younger plants. Those leaves do kinda look like it could be a bit of that but I'm not seeing the typical brown tips or edges of the leaves that show up pretty quick with nute burn.

You shouldn't need to feed nutrients yet as that soil should be loaded with nutes yet only 4 days from repotting. Wouldn't hurt to add a little CalMag to the next watering or a bit of epsom salts if you don't have that handy in case it's Mg deficiency as it looks a bit like that tho the pH would have to be off quite a bit to lock that out.

As to the yellowing of lower leaves in the other plants that would usually indicate they need some nutes because low N will show as the oldest leaves going uniformly yellow and limp and that progressing up the plant while the tops remain green and healthy. Often happens with lower light levels but that shouldn't be happening in your case with a 600 overhead.

Wish I could confidently just say the problem is X and this is what you do to fix it but what I see in your pics doesn't really point to one thing in particular to me. That's why I don't grow in real dirt. Always had strange things going on that were hard to figure out when I did. Soilless and DWC work great for me.

Good luck.

:peace:
 
Big Z

Big Z

Member
OldMedUser said:
High Big Z

The new growth looks healthy enough but with a look at the full size pic it looks like dried up minerals on the edges of the older leaves.

Do you spray your plants at all because that's what comes to mind. Regular misting of established plants washes some nutrients out of the leaves and the older leaves will show that first.

Are you using that Ocean Forest at full strength maybe. I don't use it but have often read in other threads that people are warned that it can be pretty hot and can cause nute burn with younger plants. Those leaves do kinda look like it could be a bit of that but I'm not seeing the typical brown tips or edges of the leaves that show up pretty quick with nute burn.

You shouldn't need to feed nutrients yet as that soil should be loaded with nutes yet only 4 days from repotting. Wouldn't hurt to add a little CalMag to the next watering or a bit of epsom salts if you don't have that handy in case it's Mg deficiency as it looks a bit like that tho the pH would have to be off quite a bit to lock that out.

As to the yellowing of lower leaves in the other plants that would usually indicate they need some nutes because low N will show as the oldest leaves going uniformly yellow and limp and that progressing up the plant while the tops remain green and healthy. Often happens with lower light levels but that shouldn't be happening in your case with a 600 overhead.

Wish I could confidently just say the problem is X and this is what you do to fix it but what I see in your pics doesn't really point to one thing in particular to me. That's why I don't grow in real dirt. Always had strange things going on that were hard to figure out when I did. Soilless and DWC work great for me.

Good luck.

:peace:
Click to expand...
Thanks for the input! I do not spray the leaves just water the soil. I am currently using FFOF at full strength didn't cut it with anything. I definitely heard the same about it running a bit hot when would you recommend to start feeding it nutrients?
 
Big Z

Big Z

Member
bf80255 said:
was it a clean transplant? minimal stress? were they in the same soil before transplant? what are you feeding them?

could be N because the dicoloration and clawing but I cant say if its too much or too little till I get more specifics. probably N deficient tho.
how are you adjusting pH?
Click to expand...
Yup super clean transplant very little to no signs of stress after as well. Before transplanting into FFOF they were in the Fox Farm Light Warrior. Currently am just feeding them water no nutrients as I heard the FFOF would supply them for a good couple weeks. I adjust the ph of my water every time before watering to around 6.2-6.3.
 
whitebb2727

whitebb2727

Well-Known Member
Big Z said:
How would the watering effect the white/tan dots of the leaves? They were over watered once when seedlings but every water sense then has been when the soil is pretty much dry.
Click to expand...
The white dots are from water or nutes on the leaves and burnt them.

I'm talking about the over all yellow in the leaves. It is one of two things. Either over water or mag deficiency.
 
OldMedUser

OldMedUser

Well-Known Member
Big Z said:
Thanks for the input! I do not spray the leaves just water the soil. I am currently using FFOF at full strength didn't cut it with anything. I definitely heard the same about it running a bit hot when would you recommend to start feeding it nutrients?
Click to expand...
I would not be too quick adding nutes to that. Like Whitebb said give them some time grow some nutes into the new soil as there should be lots of nutes in it.

A couple years ago I picked up some ProMix Vegetable and Herb mix that has added organic nutes, MycoActive organic growth enhancer and gypsum in a peat based mix that includes compost. OMRI listed so the folks that want to stay organic can use it with a clear conscience. :)

I grew some of my Blue Heaven plants from seed in it alone under CFLs for the first month or so in veg. Started in tiny seed starter pots, into 3" square pots then quart size pots. At each stage I repotted as soon as some bottom leaves showed a hint of yellow and they perked up right away as soon as they got new soil to feed off of. They got nothing else and were watered with RO water so they got nothing from the water to help them grow. Other than pure water to drink of course. The only other thing I put on the mix was about 15% coarse perlite as it comes with some fine perlite but not enough for my liking. I generally use the ProMix HP and it has almost too much perlite if that's possible.

As an experiment I'd have to call it a complete success as those BH are heavy feeders and grew fast and healthy in that stuff. This is them in those 3" pots just before they went downstairs to the grow room to bask under the 400W EYE in larger pots.

BH_01.jpg

:peace:
 
J

James TYOYO

New Member
I use 3/4 FFOF and 1/4 Light Warrior with an extra 10-20% perlite and I almost never have to use any nutes at all during veg and my plants are always dark dark green. I only have nute issues in flower. I'm not an experienced grower by any means
 
T

THE KONASSURE

Well-Known Member
if plants are root bound

or if you re-pot them

or if you boost them up

or even just setting them into flowering

Can cause most plants to eat their leaves to grow new top growth

but it can also mean you have a bug problem and if you don`t yellow old leaf is weaker I always spray that stuff or remove it after a week or 2 don`t live giving any bugs an easy meal myself

Also top of the pot with some perlite or a mat
 
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