Calculates and charts values of DIY fertilizers for planted aquariums.
Ruby CSS JavaScript
Latest commit a38c5f3 Oct 16, 2014 flores make links for contributors
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constants Update commercial_products.yml Jun 30, 2014
i18n Update cs.yml Aug 4, 2014
lib allow user to choose how much to round, bugfixes Aug 2, 2014
public make it live Oct 28, 2012
views make links for contributors Oct 16, 2014 ui and translation bug fixes Oct 28, 2012
nutes.rb allow user to choose how much to round, bugfixes Aug 2, 2014

Yet Another Nutrient Calculator


  • Support for more than 25 compounds/DIY fertilizers.
  • Support for more than 30 commerical products.
  • Calculates all macro and micronutrients.
  • Calculates dosing for the three most popular DIY methods (EI, PPS-Pro, and PMDD).
  • Friendly input: you could use 3/4, 0.75, or 0,75 teaspoons, for example.
  • Dry dosing or solutions for target or dose or teaspoon or bottlecap.
  • Solubility checks.
  • Toxicity checks and a wiki for Copper.
  • Warnings for tricky compounds (ex: K3PO4, EDDHA Iron, etc)
  • Mobile-friendly interface available at
  • Approved by PlantBrain/Tom Barr!
  • Interactive, zoomable, fancy charts (via HighCharts )
  • Modelling projections for your first month of dosing by method (EI, PPS-Pro, etc) as well as suggested guidelines for each method.
  • Translations in Dutch, German, Japanese, Brazillian Portuguese, Romanian, and Spanish
  • Open source!
  • Super gross and the code is all over the place, thanks for understanding :)


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