Stop guessing. Keep your reef thriving.
Track parameters, maintenance, livestock, and equipment in one place — so you can catch problems early and protect the reef you've invested thousands into.
Free for your first tank · No credit card required
Coastal Reef 40B
40 gallons · Mixed reef
Biological algae control
Bubble algae detected. Emerald crabs are reef-safe and a good fit for your 40B setup.
Dosing consistency
Alkalinity has swung 0.6 dKH over 7 days. Smaller, more frequent doses tend to smooth this out.
The real risks
Most reef tanks don't fail overnight.
They fail in small, missed signals. GuidedReef helps you spot them before they cost you livestock or thousands in replacements.
Parameter drift
Alk, salinity and nitrate slowly creeping away from target — invisible until corals start to recede.
Missed maintenance
One skipped water change becomes three. Filter socks, skimmer cups and dosing all blur together.
Equipment failures
Heaters, pumps and reactors don't last forever. Warranties and service dates get lost.
Livestock stress
New additions, aggression, disease — small notes today prevent expensive mistakes tomorrow.
Why hobbyists choose it
Built by reef hobbyists.
Reef-first by design
Designed specifically for saltwater reef aquariums — not a generic aquarium app.
Real workflows
Built around how reefers actually keep tanks: testing, dosing, water changes, livestock notes.
Always improving
Continuously refined based on direct feedback from the hobbyist community.
One tool, one tank, one truth
Everything in one place.
Stop juggling spreadsheets, notes apps and group chats. GuidedReef is the single source of truth for your tank.
Tank Dashboard
A single calm view of every tank's status, recent activity and what needs attention.
Parameter Tracking
Log salinity, alk, calcium, magnesium, nitrate, phosphate — see trends, not just numbers.
Maintenance Scheduler
Water changes, dosing, filter swaps — scheduled, logged and never forgotten.
Equipment Inventory
Heaters, pumps, skimmers, reactors — with install dates and replacement reminders.
Livestock Records
Fish, corals and inverts — additions, behavior notes and acclimation history.
Historical Trends
See how the tank has actually behaved over weeks and months — not just today's number.
Compare the options
Why not just use notes or a spreadsheet?
Reef tanks need more than scattered notes or manual tables. Here is how the options stack up.
| Feature | Notes App | Spreadsheet | GuidedReef |
|---|---|---|---|
| Maintenance Scheduling | Limited | ||
| Parameter History | Limited | ||
| Equipment Tracking | Limited | ||
| Livestock Records | Limited | Limited | |
| Trend Monitoring | |||
| Tank-Specific Recommendations |
Your reef deserves better records.
Set up your first tank in under two minutes. Start protecting your investment today.
Free for your first tank · No credit card required