need some help please, cant figure this out. +rep

urgod

urgod

Well-Known Member
IMG_0235.jpgIMG_0236.jpg


i am not sure whats the problem here. I had this problem throughout this grow and i never had this problem any other grows that i've had. the only thing different here is the new pH meter that i've been using, however i have been calibrating it religiously. i flushed more than 4 times already, got a different pH meter to test it out. i am about to switch nutrients...

anyways, they are on their first week of flowering
temperature 68-75F
pH 5.5-5.9
EC 1.9-2.0

running lucas forumla base at 8ml micro, 16ml bloom
i also use hygrozyme at 5ml/gal
added calmag this week at 5ml/gal
couple drops of SS 1drop/gal
also liquid karma 5ml/gal
and a little bit of bloombastic 0.5ml/gal
 
Guccizillaa

Guccizillaa

Well-Known Member
Im seeing an overall Npk burn. Looks identical to what happened to my plants while they were in Mg. The Mg had 18% nitrogen and some ridiculous amount of p and k. I took them out of it and gave them an npk of 5-5-5. They got better fast. I agree with you though, if your starting to feel like its the nutrients change them, get an easier, more balanced set of nutes to work with.
 
urgod

urgod

Well-Known Member
cool, i thought it was my pH and i kept messing with my pH instead of my ppm/EC. how much should i bring down my nutrients? i used to keep my plants at 1300ppm @.7 conversion without a problem. now i am growing some new strains, maybe their nutrient tolerance is different?
 
Guccizillaa

Guccizillaa

Well-Known Member
urgod said:
cool, i thought it was my pH and i kept messing with my pH instead of my ppm/EC. how much should i bring down my nutrients? i used to keep my plants at 1300ppm @.7 conversion without a problem. now i am growing some new strains, maybe their nutrient tolerance is different?
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Not even going to front when i say I've never grown hydro. Your Ph for hydro if it likes to chill closer to that 5.5 then it does the 5.9 yea it could be a little low. And from everything I've ever read, and seen in videos, 1300 ppm's for flowering is butter zone material. What im about to say next is a "what id do" so be weary listening to it. I would cut the nutes in half and see if they get deficient. If they don't you should see the problem start to go away, if they do become deficient, you know you went to low, yet what your at is to high, so you could adjust it accordingly. Something Uncle Ben told me on here that I've stayed true to in all my recent problems, read the plants not posts. If you adjust the nutrients and you know what the plants doing in response, you know whether you went too high or too low.
 
Guccizillaa

Guccizillaa

Well-Known Member
hotrodharley said:
I told you on another thread you started about this that your EC is too high. Telling you again.
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That could very well be it too, although 1.9 ec doesn't seem oh so high that it would do that to your leaves, still seems like an npk burn to me. But I've never grown hydro so im saying now i could very well be wrong.
 
Nizza

Nizza

Well-Known Member
sounds like the temperatures are good. lower nutes is probably what u need, lookes nute burned. Dont back off on your nutes too fast or you could shock them (like dont go straight h20
 
Guccizillaa

Guccizillaa

Well-Known Member
Listen to the ones who im assuming have grown hydro before. If lowering your ec does not work, go through your options.
 
vapedup

vapedup

Well-Known Member
Only grow in hydro, lower ur nutes, take it to about a 1.0-1.2 ec and u will be happy. Less is more in MJ cultivation, in week 4-5 u can hit them hard, then work ur way back down, another tip, when u change the light cycle to 12/12, leave the veg nutes in ur res for the 1-2 week, helps the plant in its transition stage
 
G

GK1

Active Member
Hey man,
Sometimes the most important thing in plant diagnosis is the approach....logical. 1st pic looks like classic C def to me......we keep that in mind. 2cnd pick looks like N has been moved from a lower fan leaf to be used by the growing shoot, classic N def....we keep that in mind.

You mention lucas so right away I think 0-1-2 NPK ratio and no N
You mention cal/mag "this week"

So that leads me to ask;
how much N in veg were you giving and when did you stop?
Did you add any cal during veg?
How much cal does your base nute mix have?
Are you in a media that is C hungry? like coir?
How do you adjust pH and with what reagent?

Calcium is important in the absorbtion of other nutrients. It regiulates proton pumps within the root that allow nute to be absorbed. Without C this absorbtion process is interrupted and you get phantom def issues. Furthermore, "bastic I believe has silica in it, yes? At very least it is very alkaline and has the potential to precipitate C from solution thus exacerbating the potential issue.

For anybody to say its this, this or this and heres how to fix it is folly....especially from a pic! But if you take the right approach you can often cover the most likely causes at once.

Clearly, at EC 2 you are not "starving" your plant. I have run EC's MUCH higher and seen fantastic results. However, it is often strain specific so.....

Your pH is fine. Period. Lockout do to fluctuating or "wrong" value is somewhat of a fallacy. 4.5-6.0.....several nute companies and a ton of gardens back this up.

http://www.flairform.com/hints/ph_optimum.htm

So, with all this to contemplate its most likely a Cal deficiency that is preventing proper nutrient absorbtion and that has led to various symptoms that cant be completely explained. Depending on your answers to the questions, I would also suspect a N def that needs approaching. Hope this helps. peace
 
urgod

urgod

Well-Known Member
Thanks guys for the helpful inputs. I always have kept my ec at 2.0 and never had problems with it until now. I backed my ec down to 1.0. Isn't Lucas formula suppose to operate at 1300 ppm or 2.0 EC? I am worried that plants would get nutrient deficient at a lower EC
 
urgod

urgod

Well-Known Member
Also I read somewhere that one should dial in their feeding schedules. Essentially, checking the ppm daily and find a good balance between not too little nutes where ppm will drop as water level decreases, or the opposites when plants drink water and don't uptake nutes. Would you also recommend mutlple strain grow? I find it a lot more difficult to find an optimal nutrient level where all strains would flourish. So far 1/2 of my strains (og kush, boss hog, blueberry gum) has no reaction to the high EC of 2.0. Whereas my moby dick, bubblegumer are hating the nutrients.
 
G

GK1

Active Member
urgod said:
Thanks guys for the helpful inputs. I always have kept my ec at 2.0 and never had problems with it until now. I backed my ec down to 1.0. Isn't Lucas formula suppose to operate at 1300 ppm or 2.0 EC? I am worried that plants would get nutrient deficient at a lower EC
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At that EC.....get some cal in there. Chances are things will get much better very quickly.


If you use silica or pH up we need to have another discussion about alkaline reagents and cal precipitating from soln at mixing. If you dont use em, we dont to have it but its KEY if you are. Peace.
 
G

GK1

Active Member
urgod said:
Also I read somewhere that one should dial in their feeding schedules. Essentially, checking the ppm daily and find a good balance between not too little nutes where ppm will drop as water level decreases, or the opposites when plants drink water and don't uptake nutes. Would you also recommend mutlple strain grow? I find it a lot more difficult to find an optimal nutrient level where all strains would flourish. So far 1/2 of my strains (og kush, boss hog, blueberry gum) has no reaction to the high EC of 2.0. Whereas my moby dick, bubblegumer are hating the nutrients.
Click to expand...

multiple strains are difficult for that very reason....over time you learn which strains to pair together. Peace.
 
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