Potassium Deficiency?

[CrazyChef]

So, one of my Grape Ape plants leaves look like this.
My best guesstimate is potassium deficiency due to pH being too high?

 

[Chris Scorpio]

Ok?

Are you showing us, or asking opinions

Lol

Cuz....not much info to go on.....

What's the pH, whatcha feeding it, you know the drill

And full plant pics, we like pics, worth 1000 words I hear

 

[CrazyChef]

Ok?

Are you showing us, or asking opinions

Lol

Cuz....not much info to go on.....

What's the pH, whatcha feeding it, you know the drill

And full plant pics, we like pics, worth 1000 words I hear

Asking...

Using Fox Farm Grow Big and Big Bloom at 1/2 strength once per week, and plain water once per week. Been using RO water, which tends to hover around 6.5-7.0pH, but the plant looks like it's telling me otherwise. The other 3 plants (including another Grape Ape) all seem to be doing well. The reason for the first pic of the leaves only is because the full plant pic doesn't really show the problem (lousy photo lighting in the room).

Here's a full plant pic, as well as a pic of all 4 plants::

 

[Chris Scorpio]

I'd get that pH down to 6.2-6.3

What pH ya use with nutes?

 

[CrazyChef]

What pH ya use with nutes?

I've never tested the water with the nutes in it. I guess maybe I should do that, huh?

 

[Purpsmagurps]

I'd get that pH down to 6.2-6.3

What pH ya use with nutes?

6.2 6.3 is a high range for coco, I think he is in soil, which you would need it up to about 6.5 to 6.8

 

[Purpsmagurps]

if you are giving bloom boosters you dont want to go under the ph of 6.5 or itll be wasted

 

[Chris Scorpio]

Sweet spot is 6.3 for soil

A d Coco is 5.6-6, 6
being higher

But is irrelevant if you don't test the pH after adding nutes

 

[CrazyChef]

But is irrelevant if you don't test the pH after adding nutes

Okay, so I've been properly spanked... I'll test tomorrow when they get their nute feeding.
So, I'll shoot for around 6.3-6.5, correct?

 

[CrazyChef]

And the yellowing... Would you say I'm close to the target thinking it's a nute deficiency related to incorrect pH?

 

[Chris Scorpio]

Probably pH related

I also shoot for a range, never the same

So 6.2-6.5 yer good, 7 too high, 6 too low

 

[Mayne]

if you are giving bloom boosters you dont want to go under the ph of 6.5 or itll be wasted

reallllllyyyyyy???

I did not know that,

 

[Mayne]

My crap is wheck, i have potassium problems, but ive been ph to 5.8 since seed, but now in week 7 flower, looks potassium deficianct, started earl;y, like week 3, but thought it was mag. Added mag, didnt change, so added potassium chloride, and still, nothing better, but i havent raised PH yet. Im just about into flushing mode anyways, ..

I think i burnt the crap out of them tho early. This cocoloco is no joke, and since im 12/12 from seed, i probably dont ever have to add anything but calmag and mag. But im thinkin, from now on, im going to get ph to 6.4 at least. they just veg really good at 5.8. I have a Cherry wine that is just starting to flower, so not going to add nothing for as long as i can except the 200ppms of calmag thru week 4 flower, then just mag till chop. oh, and only 6.4 PH water.

Mine started just like crazy chefs did. BUT, i didn find some potassium chloride if you do need to add it alone, at walmart, called, "noSalt" and from what ive read, this plant loves the stuff.

 

[Chris Scorpio]

Just get a pk booster like koolbloom for flower

What I use

 

[CrazyChef]

Oh yeah, forgot to add that I'm using Sensi CalMag Xtra at 5ml/gallon of water once per week with the other nutes.

 

[Mayne]

Just get a pk booster like koolbloom for flower

What I use

i used open seaseme once, and megacrop pk 1 time,