Problem after feeding

Running in Coco about 3-4 weeks old plant was healthy prior to feeding 24hrs ago. 700ppm and 1.5 EC PH 5.9 fed until some run off...Running with Canna Nutes ...Seems to be mainly on Old Growth Any help would be appreciated
 

Jack og

JackOG
Staff member
2,435
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Some necrosis is evident , also coco, any cal mag being used?
What’s the new growth look like?
 

Jack og

JackOG
Staff member
2,435
263
Pick off the dead older fans, take it easy in feeding and yr numbers are conservative so you are ok. I’m more inclined to think it maybe environment and or just plain ol old leaves
 

SkunkyDunk

Premium Member
Supporter
574
143
Looks like slight , slow excess light burn.
I run my seedlings under a 6 bulb T5 HO fixture and my lower fans take on this look, sometimes a week later, hence "slow".
Just a thought!
 
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