Hydro Nutrient Calculator

Dial in reservoir feeds for your HERB tower with fast ml/L dosing, split A/B nutrient support, and built-in pH and EC reminders.

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Mode Single or A/B

pH target 5.5-6.5

Saved Auto

Simple Mix

Start with how much water is in your bucket.

How much water is in your bucket?

litres

What are you growing?

I use Part A + Part B nutrients Turn this on only if your bottles are split into A and B.

How strong should the feed be?

Nutrient dose from the bottle label

ml/L

Did you add extra water?

litres

Feeding notes

Nutrient Commander Mix nutrients and calculate feed strength.

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Follow the steps below after measuring the water.

Total nutrient amount 0 ml

Top-up amount 0 ml

What do I do now?

pH target 5.5-6.5

EC/PPM Check EC/PPM after mixing.

Mixing order Add Part A first, stir, then Part B.

pH adjust Adjust pH only after nutrients are fully mixed.

Last mix saved: not yet

Companion app

Use the calculator here, then jump into the HERB companion app for plant checks, feed notes, and growth tracking.

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