Reef-critical parameters
Alk, Ca, Mg, NO3, PO4, salinity, ORP — overlaid charts so correlations show up before problems do.
Reef tank app
The app for people who take their reef tank seriously.
Parameters, dosing, maintenance, livestock and planning — built for reef tanks, from nano reef to SPS-dominated.
ReefFlow is the reef-tank-first app.
Reef tanks do not forgive carelessness. Alkalinity drifting 1 dKH overnight, phosphate climbing, magnesium ignored, dosing miscalculated — any of those mistakes turns into RTN, STN or a tank that simply stops growing. ReefFlow is built to lower that risk: an app organized around the daily routine of a reef keeper, with parameters, dosing, maintenance, journal and livestock integrated.
Track alkalinity, calcium, magnesium, nitrate and phosphate with overlaid charts so you see relationships (Alk dropping while Ca crashes? Mg flat while Ca stalls?), schedule dosing with reminders, log changes to skimmer or lighting and keep a visual journal of every coral.
Reef tank done right, without spreadsheets, paper notebooks and three apps open at once.
Who it is for
- Reefers running soft, LPS, SPS or mixed systems
- Nano reef keepers chasing stability
- SPS keepers who need tight Alk/Ca/Mg control
- Hobbyists moving from FOWLR to reef who want method
- Anyone dosing Balling, two-part, all-in-one or kalk
- Reefers who want long parameter history to see cycles
Dosing organized
Set up Balling, two-part or all-in-one routines. Reminders, history and dose calculation.
Reef maintenance
Skimmer, media, water change, refugium care, pump cleaning. Recurring cycles nobody forgets.
Reefpedia: corals and fish
Over 1,000 species. Lighting, flow, placement, diet and compatibility for each one.
Reef journal
Photo timeline of every coral, notes on RTN/STN, additions and system changes.
AI analysis (ReefMind)
AI reads your parameters, spots patterns (Alk drop, NO3:PO4 imbalance) and suggests fixes.
Your reef deserves an app that matches its standard.
Free for iOS and Android. Get started today.
FAQ — reef tank app
Does ReefFlow work for SPS-dominated tanks?
Yes. The reef-critical parameters (Alk, Ca, Mg, NO3, PO4) are first-class. Target ranges and AI are calibrated for reef.
Can I set up full Balling?
Yes. Each part (1, 2, 3) is configured with volume, frequency and schedule. Reminders and history follow.
Does it work for nano reef?
Very well. Calculations scale with volume. The free plan includes 1 aquarium; paid plans support multiple aquariums.
Is there per-coral lighting guidance?
Yes. Reefpedia ships per-species lighting (PAR/PUR), flow and placement notes.
Does it calculate Alk dosing?
Yes. Enter current Alk, target Alk and volume — get dose in mL.
Are there alerts for out-of-range parameters?
Yes. Set a target range; the app warns when a test falls outside.