Vivid coral reef macro with SPS and LPS corals
Saltwater & Reef

Track your reef with clarity.

Log reef parameters, coral, livestock, dosing, water changes, maintenance, and tank trends — all in one reef tank app built for SPS, LPS, soft coral, nano, and saltwater systems.

Reef Theory saltwater onboarding
Reef Theory reef tank dashboard
Reef Theory reef parameter charts

Reef Ecosystem Tracking

Everything your reef tank needs.

Reef Theory helps reef keepers track the details that matter — from alkalinity, calcium, magnesium, nitrate, phosphate, salinity, and temperature to coral growth, dosing, livestock, and maintenance history.

Alkalinity, Ca & Mg

Track alkalinity, calcium, and magnesium trends so you can spot swings and understand how your reef changes over time.

Salinity & Temperature

Log salinity and temperature readings, notes, and trends to keep your tank history easy to follow.

Coral Inventory

Track frags, colonies, placement, photos, color, growth notes, and care history in one coral inventory.

Dosing

Log two-part, All-For-Reef, trace elements, amino acids, and other dosing routines with notes and reminders.

Lighting & PAR

Track light schedules, intensity changes, fixture notes, and PAR readings so you can connect lighting changes to coral response.

Livestock & Compatibility

Track fish, coral, inverts, anemones, behavior notes, compatibility, and care history.

Reef Theory saltwater dashboard on iPhone

The Reef Console

Your reef tank, organized.

A reef tank tracker built to help you understand your aquarium over time. Track parameters, coral, livestock, dosing, maintenance, equipment notes, and reef trends in one clean dashboard.

  • Reef parameter trends and test history
  • Coral inventory with photos, placement, growth, and color notes
  • Dosing, water change, and maintenance routines

Equipment & Future Integrations

Built for where reef keeping is going.

Start with clean tracking today, with future support planned for controller data, equipment integrations, automation logs, and smarter reef insights.

Reef Automation

Future support for lights, returns, ATO, gyres, and controller integrations — designed to bring reef equipment data into one clean view.

ATO & Equipment Logs

Log top-off notes, skimmer changes, filter maintenance, pump cleaning, and equipment history.

Reef Analytics

Connect parameter changes with coral growth, color, behavior, and maintenance over time.

Smart Alerts

Planned reminders and alerts for testing, dosing, water changes, maintenance, and important reef tasks.

Where reef keeping becomes easier to understand.

A reef tank changes slowly, then suddenly. Reef Theory is being built to help you see the patterns, keep better records, and stay ahead of care before small issues become big problems.

Private Beta

Help shape the future of aquarium keeping.

Reef Theory is still early, and beta testers will help shape the app before public launch. If you keep freshwater, planted, nano, or reef tanks, we'd love your feedback.

What type of aquarium do you keep?

Invite-only TestFlight access. No spam — just build updates.