AquaGuard: Fish Tank Care

Catch water problems early, understand every reading, and keep care on schedule with guidance tailored to the fish you actually keep.

Know what is happening in your freshwater aquarium—and what to do next.

AquaGuard turns complete water tests, the fish you keep, and your care history into clear, conservative next steps. Log every important reading in one pass, spot changes early, and keep maintenance on schedule without juggling notes or spreadsheets.

UNDERSTAND EVERY WATER TEST

Enter pH, ammonia, nitrite, nitrate, temperature, GH, and KH together. AquaGuard keeps a clear history, shows trends, and explains unusual readings in plain English. Choose US gallons and Fahrenheit or liters and Celsius.

CARE FOR THE FISH YOU ACTUALLY KEEP

Add your fish and use the built-in reference library for 170 freshwater species and other commonly kept aquatic animals. AquaGuard uses the residents you add when checking temperature, pH, tank size, and compatibility.

CATCH CHANGES EARLY

See parameter warnings, rising trends, possible cycle problems, tank-size concerns, and compatibility guidance. Each insight includes a reason and a careful next step instead of an unexplained alarm.

NEVER MISS TANK CARE

Get local reminders for water changes, testing, filter care, and feeding. Mark a task complete and AquaGuard moves the next reminder forward.

OPTIONAL AI, CLEAR BOUNDARIES

Ask AquaGuard can answer tank-aware questions, and AI Photo Check can help you inspect a photo you choose. Both features remain off until you grant explicit permission, and every result is guidance rather than a diagnosis.

FULLY FREE IN VERSION 1.0.1

There are no purchases, subscriptions, locked features, or paywalls. Multiple tanks, complete history and CSV export, proactive insights, Ask AquaGuard, and AI Photo Check are all included.

PRIVATE BY DESIGN

Your aquariums, readings, fish profiles, and care history stay on your device. No account, advertising, or tracking. Optional AI features are off until you give permission; only content you choose and relevant tank context are sent through zero-data-retention model endpoints to generate a response.

AquaGuard supports freshwater aquariums in version 1.0.1. It does not provide marine or reef ranges. Guidance and AI output can be wrong and are not veterinary advice.

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