Log your water tests, get instant colour-coded status, and know exactly when your tank is safe. ReefStat guides you from day one.
Track all 10 parameters, spot trends with sparkline charts, and keep your reef dialed in.
No credit card required · Set up in under 2 minutes
Log a reading and get clear advice: "Your ammonia is dangerously high — do a 25% water change now." Not just a number, but what to do about it. Every reading gets an instant verdict — calibrated to your exact tank type. SPS gets tighter thresholds than FOWLR, and you get actionable advice, not just a colour badge.
Every parameter card shows a mini trend chart and a delta indicator so you can spot drift the moment you open the dashboard. Full charts with warning bands when you need the detail. Mini sparklines on every card, delta indicators showing change since last reading, and full charts with ideal/warning/critical overlays. You see the trend before it becomes a problem.
Track ammonia → nitrite → nitrate through all four stages. Stage-by-stage coaching tells you exactly what's happening and when it's safe to add your first fish. Calcium, Alkalinity, and Magnesium on three synchronised charts with shared date controls. Spot the imbalance the moment it starts — before your corals feel it.
No spreadsheet migration. No learning curve.
A guided wizard walks you through: name, type, and volume. Pick Fish Tank or Reef Tank — threshold profiles load automatically.
Enter your test results — one parameter or all ten at once. Every value is instantly classified and flagged.
Sparkline trends on every card, full charts with range overlays, and email alerts when something drifts. Fix problems before they start.
Every tank type gets its own threshold profile. Custom lets you define every single boundary.
Create your account, log your first reading, and see the difference in under 2 minutes. Tracking your parameters will always be free.
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