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Hydro-Calc Hydroponic and Fertilizer Calculator

A tool for building hydroponic and fertilizer mixtures, with tools for optimizing ingredients, visualizing nutrients, and more.

Launch App

Building your First Mixture Quickstart Guide

Latest Blog Post

Substances Fix

11/28/2025

Minor update to fix the substance list view and search.

New Features

  • None

Bug fixes

  • Mixtures Editor: Fixed broken duplicate fetch introduced by other changes.
  • Substance List: Fixed broken search implementation, pagination issue