14 parameters that matter
Salinity, KH/dKH, Ca, Mg, NO3, PO4, pH, temperature, ORP and others — 14 in total, plus custom parameters.
Water parameter tracker
Aquarium water parameter tracker, without the spreadsheet.
14 parameters: salinity, alkalinity, calcium, magnesium, NO3, PO4, pH, temperature, ORP and more — logged, charted, alerted and analyzed by AI.
Stop tracking parameters in a spreadsheet.
Stable parameters are half the work of a marine aquarium. Yet most people log them in Excel or in a notebook — no graphs, no alerts, no cross-parameter view, no history that explains why a coral stopped growing three months ago.
ReefFlow replaces the spreadsheet with an app that understands reef tanks. Each test becomes a point on a chart, with configurable target ranges, alerts when out of range, and overlay graphs (KH next to Ca, NO3 over PO4 to read redfield).
For people who want more than logging, ReefMind reads the history and flags patterns — "alkalinity drifting -0.3 dKH/day", "Ca:Mg outside 1:3", "PO4 at zero for two weeks, may be limiting growth".
Who it is for
- Reefers who test weekly and lose history
- Spreadsheet refugees
- Anyone who wants trends, not just last value
- Reefers who need alerts when parameters drift
- Dosers who want to correlate dose vs. result
- Hobbyists trying to understand why their tank swings
Time-series charts
See each parameter over time. Overlay parameters to read correlations.
Target ranges & alerts
Set the ideal range for your system. Get alerted when a test goes outside it.
AI analysis (ReefMind)
AI reads history and flags patterns: Alk drift, imbalances, parameters stuck at zero.
Long history
Months, years. Full history is kept — useful for maturation cycles and seasonal swings.
Multiple aquariums
Each tank has its own parameters, ranges and charts. Compare systems.
Track parameters like a reef pro.
Free for iOS and Android. Set ranges, log tests, never miss a pattern.
FAQ — water parameter tracker
Which parameters can I log?
14 parameters in total: salinity, alkalinity (KH/dKH), calcium, magnesium, nitrate (NO3), phosphate (PO4), pH, temperature, ORP and others — plus custom parameters. All with charts, alerts and target ranges.
Is there a cap on number of tests?
The free plan covers 1 aquarium; paid plans unlock multiple aquariums.
Can I set custom target ranges?
Yes. Each tank has its own ranges. Useful for SPS-dominated targets vs. FOWLR.
Does the app suggest fixes when out of range?
Yes. ReefMind comments and suggests corrections (dose, water change, routine change).
Can I export history?
Export is on the roadmap. History stays complete inside the app today.
Does it work offline?
No. ReefFlow requires a connection — data syncs to the cloud in real time.