Aqua Diary is your aquarium journal in your pocket. Log water tests, livestock, plants, equipment and maintenance in one place, and the app tells you what your tank needs today.
DAY-BY-DAY JOURNAL
• The journal calendar shows what happened each day: tests, notes, dosing, photos and changes to livestock, plants and equipment.
• Entry history with filters by entry type.
• Observation notes, public or private.
• To-do list: today's and overdue tasks you can complete, snooze or dismiss.
WATER TESTS AND CHARTS
• Log temperature, pH, KH, GH, CO₂, nitrate, phosphate, potassium, iron and more.
• Set target, safe and critical ranges. Every result gets a status: on target, above, below or critical.
• Charts for the last 30 days, 90 days or a year.
• Metric or imperial units, with per-group overrides (e.g. temperature in °F).
TANK MATURITY
• See which stage your tank is in: Cycling, Stabilizing, Maturing or Stable. The phase is based on the tank's age, ammonia and nitrite readings, and events in the tank.
LIVESTOCK AND PLANTS
• Animal groups: fish, shrimp, snails, crayfish, corals and more, with an event history (added, died with cause, sold, adjusted).
• Plants with planting spot, history and a 1–5 health score with issues (algae, melting, yellowing and more).
• Species water requirements compared with your tank's ranges, so you can see at a glance whether a species fits.
EQUIPMENT, MAINTENANCE AND DOSING
• Equipment: filters, heaters, lighting, CO₂, UV sterilizers and more, with technical specs and a retirement date.
• Maintenance tasks with a frequency from daily to yearly: water changes, filter cleaning, plant trimming, water tests. Due dates and completion history.
• Fertilizer and supplement dosing with one-tap presets.
• A daily reminder at the time you choose: today's tasks, overdue tasks and parameters to test.
PHOTOS
• Add photos with a caption and date, crop them and browse your tank's gallery.
SPECIES CATALOG
• Freshwater fish, plants, shrimp and crayfish, snails and corals.
• Search, filters and quick sets such as "For my tank" or "Beginner friendly".
• Species profile: behavior, diet, food, plant compatibility and water requirements. Add a species straight to your tank.
COMMUNITY
• Browse featured aquariums from other hobbyists, filtered by type, age and activity.
• View an owner's profile and their tanks.
• Leave emoji reactions on aquariums and photos.
• Share a link to your aquarium.
ACCOUNT
• Sign in with Apple, Google, Facebook or email.
• Multiple aquariums on one account: freshwater, planted, marine and specialty. A finished tank keeps its journal.
• Your data syncs with the Aqua Diary web app.
• Available in English, Polish, German, French and Spanish.
Privacy policy: https://aqua-diary.com/en/privacy-policy
Terms of service: https://aqua-diary.com/en/tos
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