Your Tank

Tank size

Subtract rock & sand (net volume)

Live rock weight (kg)

Sand depth (cm)

Tank footprint (L×W cm²÷1000)

Net water volume363.1 L

Tank Load

Coral density — used for maintenance estimate

This controls the daily consumption rate used in the maintenance estimate below.

Alkalinity

Current (dKH)

Target (dKH)

Supplement

Calcium

Current (ppm)

Target (ppm)

Supplement

Magnesium

Current (ppm)

Target (ppm)

Supplement

Correction Dose

One-time dose to reach your target. Add slowly — never all at once.

Alkalinity

10.9g

CalciumSplit dose

40.2g

Exceeds safe daily limit. Split over 2 days — 20.1 g/day

Magnesium

151.8g

Daily Maintenance

After correcting, dose this amount every day to hold your levels. Based on typical medium reef consumption.

Alkalinity

0.173 dKH consumed/day

1.9 g/day

Calcium

2.5 ppm consumed/day

2.5 g/day

Magnesium

0.6 ppm consumed/day

1.9 g/day

Estimate only. Real consumption varies. Log two consecutive tests to calibrate your actual rate — this feature is coming in the Pro version.