Help with leaf id

UpInTheHills

Germinating
User ID
1322
Hi, seeing if someone can shed light on this problem Iv had for the past 5 grows, hoping it isnt fungus related, next move is to maybe get another tent. Im pretty sure its not nute burn as i only ever go an ec of 1.0 in veg and strain depending up to 1.6 in flower using the canna coco range, i also tent to get the tip of middle finger leaf curling upwards and dying back, i thought it cld have been strain related but it keeps happening, happening again now with 2 new strains grown from seed il attatch some pics,
 

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UpInTheHills

Germinating
User ID
1322
Couple more
 

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Old fox

Customs Avoidance
Community Member
User ID
28
Few conflicting indicators in photos of possible issues. Indicators vary from too much nutes( brown tip edges curling up) to not enough nutes ( leaf edges browning with yellowing inside) Try varying pH between 5.8 to 6.2. Shake nutrients bottle well before use, and mix water/nuites well and allow to settle before pH check. If you're in Coco, flush your medium and start nutes again at half strength, increasing every feed) - allow enough runoff. Some faint brown,/gold markings between veins (zoomed in hard on one photo) may be start of pH lockout. Most likely either a nute or pH issue.
 

UpInTheHills

Germinating
User ID
1322
Few conflicting indicators in photos of possible issues. Indicators vary from too much nutes( brown tip edges curling up) to not enough nutes ( leaf edges browning with yellowing inside) Try varying pH between 5.8 to 6.2. Shake nutrients bottle well before use, and mix water/nuites well and allow to settle before pH check. If you're in Coco, flush your medium and start nutes again at half strength, increasing every feed) - allow enough runoff. Some faint brown,/gold markings between veins (zoomed in hard on one photo) may be start of pH lockout. Most likely either a nute or pH issue.
Thanks for the tips old fox, like i say only reading 1.0 ec on wand when feeding, and ph to 6.2, always sllow runoff too, prob too much to be honest, but il check ph of run off when i feed next
 

durban kid

Blooming
User ID
1390
the stems are a nice colour are they always that looks to me too much nutrients but i dont do hydro so i could be wrong
 

UpInTheHills

Germinating
User ID
1322
Not sure mate, but yea only feeding 10cf on the wand so nothing crazy.

Yea well it happens every grow, dif strains, cultivars etc so im thinking somthing im using in the tent or the tent itself has perhaps some spores or fungus on it? i have a apple tree in the yard which has the brown spot fungus rust on it, thought maybe spores mgt havd gotten into tent or walked in somehow. Not sure, but sounds like you guys dont have a clue either.
 

afghan bob

Baked
Community Member
User ID
75
Now i could be completely wrong [probs] but if u zoom in on that single leaf shot, u'll notice dark smudges on back that look like over use of phosphorus, also on other shot those rusty markings could be cal mag issues or 2 much feed
I know u got a low e.c but diff strains like diff strengths
Pretty sure your tent is innocent
Try lowering your p.h and follow what old fox is suggesting
By the way wouldn't happen 2 be autos by any chance as they can be more prone 2 feeding issues
 
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krazykatz69

Blooming
User ID
171
What strain are you running?
Are you in veg or flower (which week?)?
Are you just using A/B or any other additives?

I have never grown in coco but here is my two cents my guess is E.C is too low and possibly try adding calmag.
pH is probably a bit too high for veg - if the plants are still in veg.

I have a friend who grows in coco and he has his E.C double what I have in my RDWC system.
 

UpInTheHills

Germinating
User ID
1322
It seems to happen every grow, only one of the plants is having a issue with it now, though it is showing a little in other places, im week 3 wedstill only feeding to 10-11 on the wand, ph is at 6.3-6.4, but again the wierdest part is its happened the last 5 grows, have pots in trays thay run off into a smaller tray below so always achieving good runoff each water, runnoff is around 6.2, feed 5-10ml calmag to 18l of water every second or so feed, coco a n b 30ml each, 10ml rhizo, 20ml cannazeme, 40ml boost to 18l bucket.
 

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afghan bob

Baked
Community Member
User ID
75
Yeah u def not over feeding but i would drop p.h back to 5.8 if still in veg, especially in coco
Cal-mag could come up to 18-20 mls per 18ltrs of water, dunno coco seems 2 suk it right up
Dont know about using boost in week 3 of veg, maybe why u got markings on leaves
All else fails follow that wise old fox and flush and gradually bring e.c back slowly 2 around 1.0 and increase
 

Porky

The Dwarf Hermie King
User ID
17
It seems to happen every grow, only one of the plants is having a issue with it now, though it is showing a little in other places, im week 3 wedstill only feeding to 10-11 on the wand, ph is at 6.3-6.4, but again the wierdest part is its happened the last 5 grows, have pots in trays thay run off into a smaller tray below so always achieving good runoff each water, runnoff is around 6.2, feed 5-10ml calmag to 18l of water every second or so feed, coco a n b 30ml each, 10ml rhizo, 20ml cannazeme, 40ml boost to 18l bucket.
Yeah looks like cal deficiency!!
 
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