Built for living ecosystems.
Track water tests, livestock, plants, CO₂, fertilizers, maintenance, and aquascape progress — all in one freshwater aquarium app.
Ecosystem Tracking
Everything your freshwater tank needs.
Reef Theory helps freshwater and planted tank keepers track the details that matter — from water parameters and livestock to plant growth, CO₂, fertilizers, lighting, and maintenance.
Water Parameters
Track GH, KH, pH, nitrate, phosphate, temperature, and more with clean trends over time.
CO₂ Monitoring
Log CO₂ schedules, bubble count, drop checker notes, and how your plants and livestock respond.
Fertilizer Schedules
Track macro and micro dosing routines, reminders, and changes over time.
Lighting Cycles
Log photoperiods, intensity changes, and fixture notes so you can connect lighting changes to plant growth and algae.
Livestock Tracking
Track fish, shrimp, snails, and other freshwater livestock with notes, behavior, compatibility, and care history.
Aquascape Management
Log trims, replants, hardscape changes, photos, and progress as your aquascape grows in.
The Planted Dashboard
Your planted tank, organized.
A freshwater tank tracker built to help you understand your aquarium over time. Track maintenance, water trends, livestock, plant growth, and aquascape progress in one clean dashboard.
- Maintenance reminders synced to your tank's load
- Parameter trends with photoperiod overlays
- Aquascape progress, frame by frame
- Ecosystem analytics tuned for planted systems
Maintenance & Automation
Stay ahead of freshwater maintenance.
An aquarium maintenance tracker that helps you stay on top of water changes, testing, dosing, and cleaning — so your ecosystem stays healthy without the guesswork.
Maintenance Reminders
Water changes, filter rinses, glass cleaning — surfaced before they slip your mind.
Smart Scheduling
Recurring tasks adapt to your tank's rhythm, livestock load, and trim cycles.
Ecosystem Insights
Correlate parameter swings with plant pearling, algae onset, and livestock behavior.
Intelligent Tracking
Log every dose, trim, test, and water change so your tank history is easy to follow.
A quiet rhythm,
held in balance.
Aquascaping is patience made visible. Stems lean toward light, carpets close, shrimp graze the substrate — an ecosystem finding its own equilibrium. Reef Theory is the instrument that lets you keep that rhythm without breaking it.
Modern aquarium keeping deserves a calmer, more refined platform — one that disappears into the glass and leaves only the ecosystem behind.
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.