How does a 4:1 stock suddenly become a perfect 1:1 PK nutrient?
In this video I break it down the simple growmie way — no complicated math, no chemistry degree, just real-world logic using Potassium Hydroxide (KOH) and 59% phosphoric acid.
I’m using a basic KOH stock of 100g per 1 liter of water, because it dissolves perfectly, stays liquid, and makes the whole PK process easy to control.
One liquid is strong, one is weak — and once you understand that, the 4:1 vs 1:1 confusion disappears instantly.
This is the simple reason why:
4 parts KOH stock + 1 part phosphoric acid = 1:1 PK
If you’re into DIY nutrients, KOH extractions, or you just want to understand PK ratios in a way that actually makes sense, this video is for you.
Part 2 will cover how to create any PK ratio you want the easy way — without formulas or overthinking.
We grow together, growmies 🌱🔥
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Safety Disclaimer
This video is for educational purposes only.
Potassium Hydroxide and Phosphoric Acid are dangerous if mishandled.
Wear goggles, gloves, and work in a ventilated space.
Everything shown here is what I do for my own grow experiments.
You are responsible for your own safety.
YouTube link:
https://youtube.com/shorts/54n2o_52TFY?si=TX9XwXPzmw40Y1QM