The must-have tool for Reefers. (Main focus are Reef-Tanks but the documentation and others functions can also be used to document your freshwater tank.)

further information at:

- Documentation of water parameters as chart or table

- Reminders: management of recurring events helps to keep track of relevant tasks concerning your tanks

- Realistic estimation of salt amount needed for your next „water change“ or „adaptation of salt content“ based on values measured with test sets / reference solutions typically used by aquarists.

- Tank specific dosing of nutrients (Nitrate und Phosphate)

- Balling Calculator: Forget about expensive water conditioners! Aqua Calculator calculates stoichiometric exact dosage of so called Balling salts (2/3 part recipes) and als standard solutions for adaptation of Calcium, Alkalinity and Magnesia.
Support for: Aquafair, Aquaforest, Coral-Care, Fauna Marin, MT-Aquaristik, Nyos, H.W. Balling, Preis Aquaristik, A.Glaser, Red Sea, Sangokai, Tropic Marin, Fritz ProAquatics, Two Little Fishies, Kent Marine, Seachem, Brightwell, Continuum Aquatics, ESV and self defined recipes.

- Conversion of measured values for reef tanks

- Detailed Preferences for measurement tools used, as well as Balling recipes.

- Mini-FAQ: Answers the most important questions for adaptation of water values.

What's New

Version 3.8.8

Dosage restrictions of the formulation can now optionally be ignored when adjusting calcium / alkalinity / magnesium


Michel Mohrmann
93.5 MB
Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Dutch, German
Age Rating
Rated 4+
© 2018 Michel Mohrmann
In-App Purchases
  1. Premium Supporter 2018 $8.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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