Am I correct?

[NiteTiger]

Medium: Reused Highly Flushed Coco
Strain: Cheeseboy (happening across all strains though)
Lighting: Currently in Veg under 400w MH
Nutes: GH FNB @ 8ml/gal, 1 Tbsp Molasses, added MagiCal after the def start
PH: 5.8
Feeding Schedule: Hand Watered Daily
Occurring On: Lower Leaves

I first noticed a very slight def when I was using just the Molasses and FNB, so I added some of the MagiCal (I wouldn't recommend the product). It has actually gotten worse.

I'm wondering if maybe the Mag was getting locked out by a too high Cal in the base mix, and just made it worse when I added the extra. Usually the molasses will take care of any Cal or Mag issues, so I'm thinking my waters carrying in some extra Cal and whacking out my Mag.

Just want to get some input, this does look like an advanced mag def, I think, but I've never had one this bad

 

[yohomz]

Looks like mag to me also. Is it getting better or worse? How does the new growth look?

 

[NiteTiger]

It actually got worse when I added the Cal-Mag into the equation, that's why I was thinking that the Mag def was probably being caused by Calcium lockout of the Mag.

I'm thinking I'll drop the Cal-Mag off, and cut back on the Molasses, see if that doesn't help.

 

[Space Ghost]

is your Ph off at all? could be a lockout. You could try epsum salt as your Mg source if you think the Ca is getting too high.

 

[Core]

5.8 ...is that the actual ph of the coco medium??..or the ph level going in?...runoff maybe?...i'm tend to agree with Ghost here..seems like some sort of lockout/ph problem..

 

[MynameStitch]

No, that is not a magneisum deficiency; can you take a picture of the plant itself too? Where at on the plant did the leaf come from?

Looks more like a toxcity more than anything to me, or commonly known as nutrient burn.How big are these plants?
How old are the plants?
WHat pH is the run off?
How often are you feeding, are you using all those products at every feed?
I highly doubt the magical was the problem; I think honestly you are feeding them too much too soon......

What brand of coco are you using?
The veins are not green enough to be a magnesium issue, even if it was a very progressed form of mag problem, it still would show somewhat green veins and by the time it would look that bad there would be necrotic tissue on the leaves, so this is telling me it's not a magnesium, but I can tell you the plant is lacking/ getting locked out of nitrogen...... and since he is not using any nitrogen in his feeding there is your answer; but there is more to the problem than just nitrogen; those spotting leaves tell me something else is wrong....... weather it's pH not stable, or too much nutrients in the mixture causing pH problems and the plant to show what it is, I don't know yet.....

but I do agree with core and Ghost, pH may be a role here... if not too much nutrients... depending on how big these plants are almost 2 tsp per gallon of flora nova bloom may be too much for them.... well like 1 1/2 teaspoons.....

 

[NiteTiger]

Yeah, I'm doing them at 1.5 tsp. Haven't had a problem with the feeding regime until the last week or so.

I had a PH problem last run that I tracked down to my PH meter needing calibration, but maybe somethings gotten out of whack. The 5.8 reading is the reading on the nute solution going in, I'll grab a run off reading real quick.

The FNB does indeed have the nitrogen in it, I've used this same formula for all my other runs, and it ran just great.

So, I'm thinking you guys must be right on the PH issue. Let me go grab that runoff measurement.

 

[Core]

some disilled water is better ...runoff is't intirely accurate...not by a long shot...i've proven that before

edit..2 be honest i do havta say that i don't know for Coco measuremants

 

[MynameStitch]

coco pH various, but the pH of the mixture should read the same as a soiless mixture...

It does have nitrogen my bad, I was thinking of the other one; GH makes too many damn products!

Ya, core knows his s*&*, distilled water does indeed give a more accurate pH value, because once the water drys up a bit in the mixture the pH changes if you don't have ph adjusters added to your water; thus the pH will go back to the normal pH it was at; pH values always change temp when you water and when the plants remove it from the mixture thus the pH changes, just as if it was in hydro.

 

[NiteTiger]

Score!

5.8 water in gives me 6.7 water out

Never ever dealt with an out of whack medium PH before, what's the best way to fix it? They're due for a transplanting anyway, was planning on doing that tonight.

This new batch I should flush with PH'ed water until my runoff matches my run in, I'm guessing?

Thanks for the help guys.

Never ocurred to me there was a problem with the medium PH, like I said, never happened to me before. :shrug:

Here's a pic of them from my last update:

 

[MynameStitch]

Oh ya, most defiantly need some transplanting there!
When they get rootbound they have nutrient absorption problems too. But your problem is pH for use; coco needs to be 5.8, so get some pH down and use it in your water.

Get your pH fixed and then feed them; there may be nutrients in the soil, but the plant is not able to absorb them so do not add more, just incase you may burn them; wait for the plant to get better then go from there.

It's good to have peeps like core,petey space ghost and so many more...and someone else who I can't name, bcause he has so many different handles; you know who you are OO

 

[Core]

i would flush with a 1/2 - 3/4 strong feeding solution...ph'd ofcourse ...but thats just me....

 

[NiteTiger]

So just PH the water to 5.8, and flush until the runoff matches?

 

[MynameStitch]

Ya, that is probably what he is going to have to do to try to rinse out all that pH stuff......

That is what I would do too.

 

[NiteTiger]

Good deal, I'll take care of that tonight when I transplant the ladies.

 

[Core]

So just PH the water to 5.8, and flush until the runoff matches?

does't realy have to match imho ...aslong as you use enough water...or you can just use a bit more plain ph'd water and give'm a mild feeding afterwards......
Nway i would not just flush her out with straight water...she will have much more leave damage if you not add a mild feeding, meanwhile or after the flush...
this is for ph issues not nute issues

edit: after the flush will save out on nutes....

 

[NiteTiger]

I was thinking about no-nute PH'ed flush until I get it down, then cap off with a feeding. Sound right?

 

[NiteTiger]

I think I was typing while you were editing

 

[Core]

your choise my friend

but when u use plain water you gonne rinse the nutes out to...so this will leave the infected leaves without propper feeding..thus it wil immediatly start to consume on its reserves causing the plant to reinforce the damage that has already been done...

hope you solve it

 

[NiteTiger]

Yeah, I gotcha

Thanks to all of you!