Indoor PH run off.

TheJoker

TheJoker

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Hi all,

I am preparing my substrate for my new auto grow. I have mixed up 60% organic soil, 30% Coco coir and 10% perlite. I then watered the substrate with cal/mag. The PH run off is around 7.0 - If I want to lower the PH of the soil to say 6.5 can I flush the substrate until the run off reads 6.5 or there abouts?

Thanks in advance!

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Auto Purple by OS
https://www.autoflower.org/index.php?threads/54433/

Dark Purple Auto by DS
https://www.autoflower.org/index.php?threads/54346/

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https://www.autoflower.org/index.php?threads/54959/
 
here yo go bud - take your time to soak it in, it's a rough guide but works well! :D

by @GoAuto6

PH Calculation Guide by GoAuto6

Rough Calculation Guide:

Here's some good info on ph.....

If your runoff pH is higher than your starting pH, use this equation to determine your soil pH:*
Soil pH = Runoff pH + Difference

If your runoff pH is lower than your starting pH, us this equation:
Soil pH = Runoff pH - Difference.

For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5

If your starting pH is 6.5 and your runoff is 6.0, your difference is -0.5 and using the above equation:
Soil pH = 6.0 - 0.5
Soil pH = 5.5​
 
So according to the chart, your soil pH is closer to 7.5

blue said:
For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5
Click to expand...

I'd personally run 10 litres or so of just PH'd water (6.0) through the pot .... THEN make a light feed and PH to 6.0-6.2 (5 litres or so) and then check the run off.

The plants will droop for a bit because of this (over watering) .. but should get your ph in check. and back on track. :D
 
blue said:
So according to the chart, your soil pH is closer to 7.5



I'd personally run 10 litres or so of just PH'd water (6.0) through the pot .... THEN make a light feed and PH to 6.0-6.2 (5 litres or so) and then check the run off.

The plants will droop for a bit because of this (over watering) .. but should get your ph in check. and back on track. :D
Click to expand...
You're a gem!! The good thing is I haven't planted the seed yet! I want the environment perfect before she goes in! [emoji38][emoji106]

-----------
Follow my current journals!

Auto Purple by OS
https://www.autoflower.org/index.php?threads/54433/

Dark Purple Auto by DS
https://www.autoflower.org/index.php?threads/54346/

Auto Haze CBD by DinaFem
https://www.autoflower.org/index.php?threads/54959/
 
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