Help!

[#1cheesebuds]

Strain: AK 47.
soil: fox farm ocean forest
lights: bright led grow bulbs.
Flowering for about to be 6 weeks of 1212 light cycle. And I know that the flowers should be much bigger by now.
fertalizer: medina hasta gro plant 6-12-6 and botanicare cal-mag plus. 2-0-0

I guess i burnt this AK And I don't know if it's salvageable AT ALL.
I don't know how long this strain is supposed to flower for but i was planing on flowering her to week 10 or 11.

This morning I flushed it again with some plain water with around 6.5ph. I've never had any problems using this brand of fertalizer before on any of my other plants. Ive used it for several years now.

I've been feeding it half the strength it suggested on the fertalizer bottle. Because I was afraid I would burn the plant. But it looks like it happened anyway. The bottle says to feed with every water so I did.

So anyway, can this be saved at all?
What if I just give her plain water from here on out or I could give it plain water but with adding the Cal-Mag plus. Or keep flushing for a few more weeks and then start the Bloom food back again.

Another problem is that I should have switched 1212 much sooner so the plant would have started flowering

much shorter than it did and not be so tall. Also it might have been finished by now.

 

[Three Berries]

I just went through two grows of the FFOF and with same OG Kush. Same issue. It's potassium I think. The Happy Frog soil does not do this as bad. I'm using Langbeinite now from the get go.

And if you just give plain water form here on out the plant basically dies. That's what I did last time. Got some good buds though. When you ae ready to cut let them have three days of darkness first. Mine got quite the stickies.

 

[Three Berries]

So How Will You Know If Your Cannabis Plant Is Suffering From Potassium Deficiency?


The signs and symptoms of potassium deficiency might be confusing to diagnose at first since potassium deficiency and nutrient burn is showing almost the same symptoms.

So to avoid confusion, you should check your cannabis plants and see if the tips of the leaves are burnt including its edges while turning its color to brown with yellow in between of each margin, then it is for sure that your plant has a potassium deficiency. Why? Because the nutrient burn is usually seen on the tips of the leaves and it doesn’t affect the edges of the cannabis leaves.

That means if your plant has brown and yellow color on the leaves most especially on its edges, then it is very clear that your plant has a potassium deficiency. Additionally, you can confirm if it is really a potassium deficiency if the tips of the leaves are dying, veins are green, dark and brown spots are visible, your buds are not fattening, and if the leaves are curling under and upwards.


https://www.sunwestgenetics.com/cannabis-and-potassium/

 

[HempKat]

I do have to agree with Three Berries in that it does seem more like a potassium issue even though it does kind of look burnt. I've never used any of the Fox Farm soils but I have seen a number of people report problems when using FFOF. Now if it is a potassium deficiency then the fact that you fed it half strength may have made the problem worse. I have grown AK47 before and definitely the buds should be much bigger by now if everything was going right. I wouldn't keep giving just water that would basically be considered excessive leeching and that's just going to make the potassium issue worse. It's been a while since I grew AK47 so my memory is a little vague but I don't recall a need to go beyond 9 weeks. I would say you should be able to salvage what you have now but you have so many damaged leaves that I doubt you'll ever be happy with the size of the buds but if you get things under control the buds you end up with should be okay and you'll be able to clean up their appearance some when you trim them assuming of course you get things under control.

If the ph is 6.5 in the soil then it shouldn't be a ph issue but it sounds like you're just measuring the ph of the water going in and that could be very different then the ph in the soil. If the ph in the soil is down below 6 then virtually everything is locked out and that would explain the yellowing (possible nitrogen deficiency) and the potassium deficiency and it would also explain the decreased bud size (phosphorous deficiency) the main drivers of bud growth are phosphorous and potassium. You may also be having some issues related to the LEDs if this is your first time with them. I myself have never used LEDs so I don't have direct experience but I have seen lots of people who have just switched from HIDs to LEDs running into troubles because they don't work the same way. The big issue though is people think since they're cooler you can have them closer but that usually leads to bleaching because while cooler they still have a strong intensity and need to be kept further away then temperature might suggest. One thing I didn't like about your routine is you say you feed them every time my experience has always been every third feeding should just be plain water to give the plant a chance to use up any built up fertilizer in the soil but you say you were feeding them half strength so maybe there was no need because nothing was being left unused? If there was though and you do have a ph imbalance that might have been the cause? Generally it's not a good idea to feed every time just because the label says you can. Different strains have different needs and so you have to go more by the signs the plant shows you then what's printed on the label. At this point it's going to be difficult to tell if you've corrected what's going on since the leaves that are yellow or browning on the edges aren't going to get healthy looking again. Your only sign will be if it looks like it stops getting worse.

If it were me I'd be wanting to make sure the ph of the run off wasn't too low and then proceed from there. At 6 weeks it's a little early to be cutting them off from any nutrients so if the ph ends up being in a good range of 6.5 in the run off then I would go ahead with feeding them for at least another week maybe even 2 more weeks, I would also try at least one feeding at full strength to see how they do but again only if there is no ph imbalance. Now if it turns out the ph in the soil is a good bit lower like 6.0 or less then get that up to 6.5 before you start adding nutrients.

 

[Creeperpark]

What your problem is #1 you are using the wrong fertilizer group with Ocean Forest soil. The fertilizers made for OF are complete and designed to feed the plant with enough nutrients and maintain a proper pH through a complete grow. Its very important to stay with the manufacturer's recommendations because of the science it took to put them together. I have seen this many times in the past 10 years and is a common mistake.

 

[Creeperpark]

You can't fix it now my friend because it's too late to fix. So sorry.

 

[#1cheesebuds]

Hey, Hemp.

Thanks for the information. I read it all and it makes a lot of sense.

Every time I go up to chrck on the plant it does have a good smell still. Also I just fed it a little bit more food the other day. Some of the flower have new hairs growing out of them. I hope this is a good sign of it trying to recover somewhat.

Also what about trimming off the dieing leaves and leaving the healthy ones on the plant.

The lights are at least a 13 away from the flowers. And it doesn't feel too hot under the lights.

 

[HempKat]

Well that's the thing with LED's you can't really judge it by the heat but given the age of the plant and I'm assuming 13 means 13 inches that should be far enough away. I would say maybe next time either make an organic soil mix of your own where you decide what's in it and can tailor it to pair nicely with whatever liquid fertilizer you might use. Or if you're going to give a Fox Farm Brand mix another go then consider supplementing it with Fox Farm brand fertilizers as that's most likely what they are meant to be used with.

As far as the dying leaves you could trim off any that you think are blocking light from reaching healthy leaves and that might help a little but given it's closeness to harvest it's probably just going to make you feel better more then the plant. Or you could just leave them alone and let the plant drop them when they're ready to be dropped. Honestly at this point I don't think it will make a big difference either way. At the end of it's life cycle in what people call the flush stage (where you only give the plant water) leaves normally change color and start dying off. I think it's because of the age of the plant that prompted Creeperpark to say, "You can't fix it now my friend because it's too late to fix."