I'm by far no expert, but I had the same issues last year, pH wasn't my issue, I will try to find the pictures on the another forum, but they looked just like yours at day 55, it turn out to be "Phosphorus Deficiency" if your using a clean water source i.e, distilled, rain or RO then you are good as far as I'm concerned, it has to be a deficiency of one of your N-P-KI've just changed the res with ph 5.8 with rizhotonic 2ml/L and canna pk 1ml/L gonna run this 2-3 days
Nice m8 I've been reading a lot 2day n looks like pk deficiency and cal as well will try my best to keep them goingI'm by far no expert, but I had the same issues last year, pH wasn't my issue, I will try to find the pictures on the another forum, but they looked just like yours at day 55, it turn out to be "Phosphorus Deficiency" if your using a clean water source i.e, distilled, rain or RO then you are good as far as I'm concerned, it has to be a deficiency of one of your N-P-K
http://www.growweedeasy.com/phosphorus-deficiency-cannabis
http://www.growweedeasy.com/potassium-deficiency-cannabis
Good luck to you good sir! I know to be so close to harvest time and then, something like this just ruins your day.
Let's us know how it turns out for you
Sent from my SAMSUNG-SM-T337A using Tapatalk
Same I'm using cal mag pro every time 1ml/L bt in this stage maybe is not a nought n need try 1.5ml/L@ Bliciu86, you mention auto pots, so, do you bottom feed?
I bottom feed, and use cal/mag Everytime I fill the res. But, all my NPK that is needed I have in my soil.
Sent from my SAMSUNG-SM-T337A using Tapatalk
Same I'm using cal mag pro every time 1ml/L bt in this stage maybe is not a nought n need try 1.5ml/L
Plargron light mix it's good soil
Advance nutrients same r good bt I didn't go over 1.5ml/L ab maybe i should go to 2ml/L
Same carboload and overdrive I'm using 1ml/L I've always used my nutrients like that bt never in autopot and never that big so maybe is simple big girls more food as usual used to do in airpots
I'm by far no expert, but I had the same issues last year, pH wasn't my issue, I will try to find the pictures on the another forum, but they looked just like yours at day 55, it turn out to be "Phosphorus Deficiency" if your using a clean water source i.e, distilled, rain or RO then you are good as far as I'm concerned, it has to be a deficiency of one of your N-P-K
http://www.growweedeasy.com/phosphorus-deficiency-cannabis
http://www.growweedeasy.com/potassium-deficiency-cannabis
Good luck to you good sir! I know to be so close to harvest time and then, something like this just ruins your day.
Let's us know how it turns out for you
Sent from my SAMSUNG-SM-T337A using Tapatalk
Cheers man ill remember that n feed them with more nuts it's always lesson for next grow. ill change the res tomorrow so what u prefer AN bloom AB 2ml/l? Cal mag pro 1.5-2ml/l? overdrive 2ml/l? Carboload 2ml/l? Also I've got canna pk 13/14 n rizhotonicSeriously consider using the recommended 2 mL/L at least for the Overdrive (P-K booster) additive. In late bloom, I dose at 2.5 mL/L using AN Connoisseur Bloom and 2 mL/for all the additives, except for the P-K boosters which I dose at 2.5 mL/L (and see no signs of excess P or K, which I did sometimes when using the recommended amounts). And 1.5 mL/L for base nutes in late bloom sounds just way too low (My plants get that when they are about 10 days old). Carboload, like the label states, is mostly for feeding beneficial microbes, so I don't know how useful this is if you aren't dosing your medium/soil with beneficial microbe products. I've switched to using AN Microbial Munch, a new(er) "microbial superfood" product.
They r in autopot with 40l res tank so it's only bottom feeding n I've seen that like burn on ends of leaves n still keep it my mix in it bt on most of my grows I've got small burn tips bt nothing like in this stage like u c it's two plants same environment soil plargron light mix n pebbles on the bottomI have a few questions for you, there are a few things that i see in the pics, i see tip burn there pretty bad all around the plant.
Did you say that you were bottom feeding as well as something in the soil?