WTH? Is this leaf septoria? Nute burn? It’s one plant of 3.
I’ve had other problems with nutrient burn, dunno why. I haven’t gone too strong on them, but now I’m down to no nutes for several waterings.
(These plants are around 7 weeks, OG Kush autoflower. NUTES: Big Bloom, Grow Big, and Tiger Bloom, per the instructions, every other watering. Temp around 75 degress, aroun d 50% humidity.)
Here’s another plant with some dying lower-mid leaves. Is this natural now that we’re in flowering?
I would expect lower leaves to turn mid to late flowering. Not sure about the top one. Almost looks like a deficiency opposed to burn. Better help should be on the way.
I’ve had some plants show similar leaf issues, Ima tag along to see what the Class comes up with in a diagnosis.
You growing in Coco? Are you spraying anything on the leaves? Looks similar to some leaves I sprayed when the sun was up. Are you giving your plants the micro nutrients?
No spray. Just watering every 2-3 days, as needed. As I said, nutes on hold, but it’s Big Bloom, Grow Big, and Tiger Bloom, as per their schedule.
I had noticed some small leaftip burning across all plants before, which boggles, because the nutes were on schedule and on recommendation.
Medium is Fox Farms Happy Frog.
I see nothing but NPK in all those. Two contain Phosphorus. Where’s the Cal Mag? Where’s the micronutrients like sulphur zinc and iron?
Give em a tablespoon of cal mag if you haven’t already in a gallon of water.
Do you have a tds meter?
You can rule out Leaf Septoria. The damaged leaves appear to be a phosphorus or zinc deficiency. Did you see the leaf spotting before stopping the feed?
Pluck the dead sheet and carry on. Let us know if it spreads further.
@noddykitty1 What’s your thoughts on this one. At first glance it appears to be a deficiency, he’s stating that he has actually overfed before and burnt the tips but upon second glance the leaves at the bottom that are yellow look similar to some I had outdoor that had some type of fungus caused by low cal and mag issues that caused similar brown spotting.
Whats your runoff ph and ppm? Im leaning towards manganese deficiency.
Soil ph at just below 7. Have to get. Yes meter I guess 
Thanks! I will get some cal mag. Wife will be happy to hear i need a tds meter now.
Not magnesium… maganese… similar butndifferent
Coco or soil for the medium 
Are you feeding or watering to liberal run off and following the FF recommended flush? FF nutrients are heavy in salts and can easily accumulate in the root zone crashing the PH and driving up the PPMs. Do you have any recent run off numbers
I do believe this to be calcium deficiency and possibly some other micro nutrients.
Fox farm trio is notorious for “cal-mag” deficiency as it doesn’t have any.
General Hydroponics Flora series is a “trio” that does have calcium and other micro nutrients.
As well as General hydroponics maxi series.
Im not suggesting you change it up now, just something to think about when its time to buy more nutrients in the future 
I use General Hydroponics exclusively, both the trio and maxi series and it’s the smoothest most easiest grows ever…
Here my current grow if ya want to check it out, theres others under my profile if ya search through my posts.
Thanks for your input. I will check out General Hydroponics for my next grow, when I’ll be switching to photoperiod.
Yeah, I did t think I’d need to know so much to get a good crop
It can be alot but once you get it, it can be very easy.
I work ridiculous hours in the summer so I’ve had to find the absolute most easy ways to do things and the GH Flora series (liquid trio) is great but the Maxi series is a 1 part powered, Maxi-gro for veg and Maxi-bloom for bloom.
Both have everything needed so I almost never have any nutrient issues and grow some nice plants.
The Maxi Series is my favorite, the 16lb containers last for many grows.
