Is this a potassium deficiency?? (pics)

Hi all! My Ak-47 was 2 months in veg and everything was pure and fine till i went to 12/12 for the flowering phase. After 1 day i gave her 1 ml of bio grow, bio bloom, top max and little of bio heaven in 1 and 1/2 litre bottle (biobizz suggests in 1 litre bottle but i gave her a little smaller amount of nuts at first to avoid any kind of stress). Next day most of the leaves were cupping (you know like riots horn) and i was very carefull not to overwater her. Now (after one week) i have flushed the plant 2 times with pure water but the burn on the leaves is still spreading as you can see on the pictures! (edit: The leaves also changed color from green to light yellow. I have cheked my ph soil level and it is still at 6.6 - 6.7. Heat and Humidity is at recommended values for the flowering phase.) Is this a Potassium deficiency? Too heavy amount for 1st watering?
Thank you.

Hope for someone's answer!

I also would like to know.

How often do you water? it looks to me like overwatering, then after, you flushed all the nutrients out of the soil. This early in flower it's not K def. It's N def, because you leached all the nutrients out. MJ needs nitrogen early in flower for the stretch stage. I would offer recommendations but I grow organically, you'll have to ask one of the guys that uses the proffesional nute lines. I would top dress with worm castings, and keep a pretty even N-P-K until 2-3 weeks into flower. I've had K def, but it doesn't materialize until around week 4 or so into flower.

Can we see a full picture of the plant? are the leaves crunchy or droopy and limp?

Cheers

more pics added.

There is danger when trying to treat for one element. There are more than one right answer to your question when trying to decide what is wrong, but which is right for you? Here is what I would do, and why.

I would add an element mix to your regular feeding but only start with 1/2 of what they recommend something like Ca-Mag or Majic -Cal. with what your food bottles recommend at 100%. This will bring all your elements into the proper ranges so the plant can start feeding again. What you have is lock up, for example when Ph gets to high or low you lock out elements and that causes other elements to become locked due to the lack of the necessary element needed to keep it mobile in the plant. An example of this is if your n level drops the first element to lock out is Mag. but the symptoms look like mag lock out but it is Fact lack of N locking the Mag out, so you need N not Mag. See what I mean, if you think mag and give it a dose of mag you just make things worse. Peace

Have a look at the chart and you can see where things lock up


View attachment 1908368

That's a better view, I revise my first diagnosis, It looks more like Cal/Mag Def. Just dilute 1tsp of Epsom Salt in a gallon of water and then mist right at lights on for a few days. Also lay off the bloom nutes until like day 10+ give her regular veg nutes for the next week then switch over, there is an amazing amount of growth still to happen.

I know there are tons of haters but AN has a cal-mag supplement that has both a grow formula and a bloom formula Grow has a ratio of 4-0-0 , has about 5% calcium, with a little iron, magnesium, and manganese. Again not a lot of folk use AN so basically get yourself a micronutrient supplement with some more nitrogen and you'll be fine. Maybe even give it a flush before you re feed.

Can i use BioHeaven for this? :

Yeah I think so. Maybe try using a nutrient that uses something similar to 1-7-17 since you're into flowering. I use Kushie Kush, since I have a kush plant, not sure if it will work for AK-47 though. Make sure not to over-fertilize them.
Also you probably shouldn't flush your plants out so much. and may want to change your source of water, since I don't know what "pure" water is.. your ph is about right though. 7 is what your looking for if you didn't know.
And.. Repot that thing ASAP. That will help it out.
Overall, it'll be just fine.

MetroidThatSmokesTheGanja said:

Yeah I think so. Maybe try using a nutrient that uses something similar to 1-7-17 since you're into flowering. I use Kushie Kush, since I have a kush plant, not sure if it will work for AK-47 though. Make sure not to over-fertilize them.
Also you probably shouldn't flush your plants out so much. and may want to change your source of water, since I don't know what "pure" water is.. your ph is about right though. 7 is what your looking for if you didn't know.
And.. Repot that thing ASAP. That will help it out.
Overall, it'll be just fine.

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Correct me if i'm wrong but i think the proper ph soil range must be 6.5-7.0. About the flush, i thought it was over-fertilization that's why i flushed 2 times. When i say "pure" water i mean without any nutes in it. I was thinking about repoting
but i'm afraid that since it's already in a big pot i'll damage the roots trying to take it out from the pot.

Are you phing your water before you feed and did you ph it before you flushed? If you have a hydro shop close by snag up some clearex or fox farm sludgehammer. I started using sludgehammer this grow and they stuff has been doing amazing so far.

slayerized said:

Can i use BioHeaven for this? :

View attachment 1908476

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you bet you can looks like good stuff

It would have been better if you repoted it while it was still vegging. But I think it'll still help your plant a lot.
You don't use tap right? I use a 4 Stage Reverse Osmosis system for my water.

Yes i do phing my water to 6.6-6.8 but i have read a lot of times in forums saying that since someone is growing organic phing the water is not nessecery. Unfortunately my hydro shop doesn't have anything from Fox Farm company and i'm not sure if i'll find clearex
that you suggested me but i'll give it a try..

Thanx a lot everyone for your replys. I'll try Bio grow and Bio Heaven only for 1 week and then i'll add Bio Bloom again. Hope not to do more damage from now on..

MetroidThatSmokesTheGanja said:

It would have been better if you repoted it while it was still vegging. But I think it'll still help your plant a lot.
You don't use tap right? I use a 4 Stage Reverse Osmosis system for my water.

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Unfortunately i use tap water for this grow but i let the water sits for at least 3 days before i water for the chlorine to vaporise. And yes i repoted it when it was in veg phase but i'm afraid to repot it again.

You said the word soil. As in real dirt or promix? Your Ph is spot on for soil. Way too high for soil less.
That deficiency looks more like phosphorus to me. You should pay heed to the Woodsman's advice on lockout. Or on anything for that matter.
You may be experiencing a little cramping of the roots. Not much you can do about it now. Root growth will be slowing to a crawl very soon anyway.
Fred

def agree with fred flintstoned it is PHOSPHORUS... and ALSO add iron or ironite to your soil 1-0-0 to your soil or let the proper dose per gallon of water and dissolve it first then add it to your normal feeding schedule during the flowering process and you will have greener fan leaves during the entire flowering process as it gives just that very small amount of nitrogen and it wont affect your yield as it also gives a wide range of micronutrients to carry your plant through flowering to finish and it wont burn or add any excess fert to your already scheduled feeding regiment