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Can't get my watering pH straight after adding CalMag.

  • Thread starter Thread starter luiz9733
  • Start date Start date Nov 22, 2021
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Can't get my watering pH straight after adding CalMag.

luiz9733 Nov 22, 2021 63 Replies 10,524 Views
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Aqua Man

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#21
luiz9733 said:
Just bought some hydroponics pH down phosphoric acid based solution and should arrive tomorrow, this should fix the issue according to the manufacturer of Calmag, apparently the fish tank stuff is not suitable for this. I’ll let you all know how this turned out. Thank you!
Click to expand...
Imo it will only partially solve your issue.
 
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luiz9733

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#22
Aqua Man said:
Imo it will only partially solve your issue.
Click to expand...
Which is? I’m actually just trying to have a stabilized pH of 6.5 when watering with Calmag instead of the 8.6 I get initially, you don’t thing the phosphoric acid will do that?
 
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Saul.Goodman

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#23
luiz9733 said:
Which is?
Click to expand...
Did you read the article @Aqua Man posted?

Marijuana pH Levels for Growing Weed: A Basic Explanation

In this article, we discuss proper pH levels for your weed plants; alkalinity, soil pH, tap water, and the effects of nutrients on pH when growing marijuana
www.thcfarmer.com
 
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ComfortablyNumb

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#24
@luiz9733 what are you growing in? Soil? what's in it? Hydro? Medium?
 
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luiz9733

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#25
ComfortablyNumb said:
@luiz9733 what are you growing in? Soil? what's in it? Hydro? Medium?
Click to expand...
Not the point, just want to water the soil with a 6.5 solution.
 
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tobh

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#26
you're starting to get hostile for no reason. i'm quoting @XhibitA's post, which will provide you the reason that @Aqua Man told you getting an acid will only partially solve your problem. Go read it before replying.

XhibitA said:
Did you read the article @Aqua Man posted?

Marijuana pH Levels for Growing Weed: A Basic Explanation

In this article, we discuss proper pH levels for your weed plants; alkalinity, soil pH, tap water, and the effects of nutrients on pH when growing marijuana
www.thcfarmer.com
Click to expand...
 
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luiz9733

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#27
tobh said:
you're starting to get hostile for no reason. i'm quoting @XhibitA's post, which will provide you the reason that @Aqua Man told you getting an acid will only partially solve your problem. Go read it before replying.
Click to expand...
I did read, and I'm just trying to keep the focus on the issue regardless of the media I'm growing... the issue is, my Calmag solution wont stabilize on 6.5 for watering. Sorry if I sounded hostile, just keeping focus on the issue.
 
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Saul.Goodman

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#28
luiz9733 said:
I did read, and I'm just trying to keep the focus on the issue regardless of the media I'm growing... the issue is, my Calmag solution wont stabilize on 6.5 for watering.
Click to expand...
So let's run some tests brother. What is the straight PH of your water, no additives?
 
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tobh

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#29
luiz9733 said:
I did read, and I'm just trying to keep the focus on the issue regardless of the media I'm growing... the issue is, my Calmag solution wont stabilize on 6.5 for watering.
Click to expand...
obviously you didn't, or you did and didn't comprehend what you read. it's simple chemistry you're dealing with, and it's new members like you that argue with the information you're given that make people like me and other long time members quit answering threads like this. go figure it out for yourself. you've been given the answers you need. if you're too dense to accept what you're being told, that's on you. good luck.
 
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luiz9733

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#30
XhibitA said:
So let's run some tests brother. What is the straight PH of your water, no additives?
Click to expand...
7.2 pH and 30 ppm, after adding Calmag 8.6pH and 124 ppm
 
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Saul.Goodman

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#31
Also, you calibrate around CalMag. CalMag is more Alkaline so you have to take that into value.
 
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Aqua Man

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#32
ComfortablyNumb said:
@luiz9733 what are you growing in? Soil? what's in it? Hydro? Medium?
Click to expand...
luiz9733 said:
Not the point, just want to water the soil with a 6.5 solution.
Click to expand...
Absolutely is the point... if it's soil you don't need to do any of this.

If it's hydro or soiless you do.
 
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luiz9733

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#33
XhibitA said:
Also, you calibrate around CalMag. CalMag is more Alkaline so you have to take that into value.
Click to expand...
I keep on adding chloridric acid drops bringing pH down to 3.5... after an hour or so pH is back to almost 8.
 
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luiz9733

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#34
Aqua Man said:
Absolutely is the point... if it's soil you don't need to do any of this.

If it's hydro or soiless you do.
Click to expand...
It's hydro.
 
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Saul.Goodman

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#35
I DMed the dude. I think we need a sticky about the difference between Dirt and Soil somewhere.
 
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Aqua Man

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#36
Ok you must have not understood my post because PH means NOTHING!!!!

PH is a result. It doesn't tell you shit about your water.

You need ALKALINITY to control your ph. So phosphoric acid is the solution to half your problem... plain and simple.
 
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Saul.Goodman

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#37
luiz9733 said:
It's hydro.
Click to expand...
Well fuck...That changes everything...Lmao
 
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Aqua Man

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#38
Now YOUR CAL MAG HAS NO ALKALINE SOURCES....IDK why ppl think they do but almost all do NOT. In fact it appears your is acidic.
 
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luiz9733

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#39
Aqua Man said:
Ok you must have not understood my post because PH means NOTHING!!!!

PH is a result. It doesn't tell you shit about your water.

You need ALKALINITY to control your ph. So phosphoric acid is the solution to half your problem... plain and simple.
Click to expand...
Adding Calmag will increase ALKALINITY making the water "harder" and pH more stable, so as I add acid to bring pH down if should stay down at some point, but it wont. I would like to understand why it wont stay down. That's all...
 
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Aqua Man

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#40
luiz9733 said:
Adding Calmag will increase ALKALINITY making the water "harder" and pH more stable, so as I add acid to bring pH down if should stay down at some point, but it wont. I would like to understand why it wont stay down. That's all...
Click to expand...
That's where our communication breakdown is here.

That's is 100% false
 
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Replies 63
Views 10,524
Started Nov 22, 2021
Latest post Apr 25, 2022
Starter luiz9733
Forum Basic Growing Information

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