Little Ocean App

Your aquarium's home base. Log water tests, schedule maintenance, track livestock, and get reminders before problems start. For freshwater, saltwater, and reef keepers.

Little Ocean is the logbook built for people who actually keep aquariums, not just look at them.

Track every tank you own, freshwater, saltwater, or brackish, in one place. Log water tests and watch your parameters over time, schedule maintenance so nothing slips through the cracks, and keep a full roster of your fish, coral, plants, and inverts. When something needs attention, Little Ocean tells you before it becomes a problem.

WHAT YOU CAN DO • Log water tests and see your parameter history at a glance • Schedule recurring maintenance (water changes, filter swaps, dosing) with reminders by push notification or email • Track your full livestock roster, plus equipment and receipts • Build shopping lists, setup checklists, and to-dos for any tank • Check compatibility and bioload before adding something new • Identify pests with Friend or Foe and log sightings right on your tank's timeline • See your whole tank's history in one scrollable timeline

BUILT FOR THE HOBBY Follow other keepers' tanks, connect with local fish stores, and get real answers when you need them, whether that's a stock check on an item you're hunting for or an emergency alert to your LFS when something's wrong. Buy, sell, and trade livestock and equipment right in the app.

Whether you're running a 5-gallon nano or a full reef system, Little Ocean keeps the details organized so you can spend less time guessing and more time enjoying the tank.

Free to use. Built by aquarium keepers, for aquarium keepers.