Acvarium: Aquarium Logbook

Acvarium is a private logbook for your freshwater, planted, brackish, reef or marine aquarium. FEATURES • Log water tests: ammonia, nitrite, nitrate, pH, KH, GH, temperature, phosphate, calcium, magnesium, salinity, TDS and more • Every reading is checked against target ranges for your tank type, with practical tips • Charts and trends with early warnings when a value drifts • Nitrogen cycle tracking for new tanks • Estimated CO₂ from pH and KH • Maintenance schedules with local reminders • Livestock list with a species guide and compatibility checks (temperature, pH, aggression, fin-nipping, group size, tank size) • Journal for notes and observations • Backups and CSV export PRIVACY No account, no tracking, no internet connection. Your data stays on your device. All content is general hobby information, not professional or veterinary advice. Available in English, German and Persian (Farsi).