Necrosis spots on leaves and some brown tips

NOOOBIENOT said:
its hard to tell but if my eyes tell me correctly ,that 70 % rh on the meter is way to high and the plants need more space from each other to breath properly and using pots that small for coco is a no go , the root ball will never get big enough to produce a decent return .Because those pots are so small a lot of the roots are constantly soaked and yet the coco doesn't hold enough nutes for a plant that size to feed on . up pot to a 5 gallon cloth pot and feed at least once a day at around 400 ppm and 5.8-6.0 ph and be sure to water/feed till you have a good strong runoff ,don't bother with the great white in coco it only gets washed out mostly , it is almost impossible to over water in coco , and i cant tell but did you add some perlite to that coco , that's a must also 30 % is a good starting point ,plants that old in coco should be double that size ,bigger pots =bigger plants = bigger yields-less problems ,with coco you will always need a drip tray underneath them if you are watering them properly, i personally think you have a mold problem and a lack of nutes problem , coco is a fantastic form of growing but it is very unforgiving if you try to cut corners , 4 plants in pots that size wont work especially when they hit the stretch phase of flower plus i don't think that light is strong enough once they go to flower, not tying to be nasty here but its just my 2 cents i have had many great grows in coco and i love coco but you cant cut corners on a hydro grow .
Click to expand...
I'm not flowering these plants. I'm trying to keep them as small mothers. They would be twice that size but I have trimmed and lst'd them quite a lot. I understand the rootbound thing but is there not a way to keep a veg plant in small pots like this?
 
As a new grower I made every mistake a person can. I find the following is a good place to start:
  1. Check your Ph. Your plants prefer a Ph between 5.5 and 6.5 so, depending on where you live this will need adjusting. The proper Ph allows your plants to use the Nutes you give them most effectively.
  2. AIR FLOW. I agree with the previous posters. Air flow is key to solving these kinds of problems. It's fine if the leaves move a little. I recommend air flow directly onto your fans as well to help extend their life and keep the heat circulating effectively.
  3. You may be overwatering which will contribute to fungus and mildew that people have suggested. Make sure your plants dry ourt between waterings! I have heard some people go 6-7 days! I'm in a dry climate and still get 3-4 days minimum between waterings.
  4. Get tyour plants off the floor especially if it is cement. Fabirc bags are great when they can breath but it looks like overwatering and a lack of airflow is affecting you now.
There is so much more but these would be a great start to solving this. Keep a VERY close eye to because I suspect this could be a buffer-like symptom of more challenging problems. If it gets worse come back fast and we'll find better brains to help you make this a success!


:goodluck:
 
Pennywise said:
Looks like they’re rootbound, and those lower leaves look like high humidity or even splash from water and nutes.
Click to expand...
Could be splash for sure. Damn I thought I've read that 70% rh is good for veg in a bunch of places. It puts the vpd in green given my temps. Maybe I don't understand the chart.
 
DRey said:
As a new grower I made every mistake a person can. I find the following is a good place to start:
  1. Check your Ph. Your plants prefer a Ph between 5.5 and 6.5 so, depending on where you live this will need adjusting. The proper Ph allows your plants to use the Nutes you give them most effectively.
  2. AIR FLOW. I agree with the previous posters. Air flow is key to solving these kinds of problems. It's fine if the leaves move a little. I recommend air flow directly onto your fans as well to help extend their life and keep the heat circulating effectively.
  3. You may be overwatering which will contribute to fungus and mildew that people have suggested. Make sure your plants dry ourt between waterings! I have heard some people go 6-7 days! I'm in a dry climate and still get 3-4 days minimum between waterings.
  4. Get tyour plants off the floor especially if it is cement. Fabirc bags are great when they can breath but it looks like overwatering and a lack of airflow is affecting you now.
There is so much more but these would be a great start to solving this. Keep a VERY close eye to because I suspect this could be a buffer-like symptom of more challenging problems. If it gets worse come back fast and we'll find better brains to help you make this a success!


:goodluck:
Click to expand...
Been watering 5.8ph

Theres a fan on each side moving the leaves quite a lot. But I am working on defoliating more and adding more space.

I thought its bad to let coco dry out? Ive never even watered to run off.

They are actually on a table 3' up but I need to get them on a rack so the bottom can breathe as well i think.
 
I have a mother plant over a year old. She’s been in a 6” pot the entire time. I’ll cut her back to the main branches leaving just a few shoots at the lower nodes.
 
yes it can be done in coco but i don't see the reason behind it ,coco requires a lot more attention and work , hydro growing was designed to give high yields in a shorter growing time frame ,3-4 grows per year vs 2 a year , just get a good quality organic soil and water every 4 days is a lot simpler if all you want are mother plants for clones , plus how many clones are you looking for in 1 year ,it all comes down to how much time and work you want to put in the mother plants , i would personally put my efforts into the plants i am gonna flower , its easy with soil just don't flip the lights to 12/12 and you are good to go ,i am sure they will provide you with more than enough clones ,
 
Well there we go. I cut off any foliage with any damage and then some. They have plenty of airflow now and I guess I'll water less. @Pennywise Do you water your little mom in coco every day? Also is there any treatment I should use incase it was mold? Or will the airflow be enough?
20201130_020527.jpg
 
parnelli said:
Thanks for the post. This morning I noticed similar brown spots on a large fan leaf on my Panama Red (Covid19 grow). Seems like some trimming is in order for Red as I move the lighting to 12/12.

2021.16.JPG
Click to expand...
Let me know if that works for you. I still haven't quite found the solution
 
Pennywise said:
Looks like they’re rootbound, and those lower leaves look like high humidity or even splash from water and nutes.
Click to expand...
So I unpotted one to look at the roots and they don't seem rootbound. I also backed off the feeding to 600ppm, 200mL each plant daily.
20201204_152323_HDR.jpg


I did notice several springtails in the coco when I removed from pot but that should be ok.
20201203_032613.jpg
20201203_032321.jpg


I removed some root mass from the one plant and repotted in a slightly wider fabric pot and added some perlite this time even though I don't think its necessary. I also lowered the inkbird to keep the rh between 65-70%. Unfortunately I cant go lower due to the tropical house plants I'm sharing the tent with. I might have to consider getting a seperate tent for these moms.
ALSO I sprayed and watered the plants with an h2O2 solution in case of mold.

I'm still experiencing slow growth and spots still appearing on new and old growth alike.
20201204_155107.jpg
20201204_155247.jpg
 
Pennywise said:
Can you any bugs on the plants anywhere?
Click to expand...
No I almost never see any pests. I saw literally 2 thrips like 2 weeks ago and sprayed the plants with spinosad immediately and closely inspect daily and never see any more. I have also seen a couple fungus gnats but very rarely. Like I said I share space with a bunch of houseplants so maybe its time to relocate? You think that is pest damage?
 
Back
Top Bottom