Aquaforest Ca Plus Lab 2L - Calcium Lab Version

Aquaforest Ca Plus Lab 2L is a concentrated liquid calcium supplement for correcting measured calcium shortages and sudden drops in marine aquariums. Calcium supports coral calcification and skeletal growth; supplementation should be based on water tests and your aquarium's individual needs.

Targeted calcium correction

Use this product when testing shows that calcium needs adjustment. It is an individual calcium supplement, not a complete calcium, alkalinity and magnesium dosing system. Aquaforest's dosing guidance allows separate calcium supplementation when a balanced multi-part system does not meet the tank's calcium requirement.

This listing is for the 2-litre Lab version. Do not assume that every product labelled Ca Plus has the same concentration or daily limit: Aquaforest publishes different instructions for some other formulas. Check your bottle label before dosing.

Lab-version dosage

• Concentration: 10mL raises calcium by 20mg/L (20ppm) in 100 litres of aquarium water.
• Maximum daily dose: 10mL per 100 litres, according to Aquaforest's Lab product instructions. This is a limit, not a routine daily dose.
• Larger corrections: spread the required amount over several days rather than exceeding the daily limit.
• Manufacturer's recommended calcium range: 380–460mg/L (ppm).

Determine the dose from the current calcium reading, target level and actual system water volume. Retest as you correct the shortage and adjust to the tank's measured consumption.

Check alkalinity and magnesium too

Calcium supplementation works alongside appropriate alkalinity (KH) and magnesium levels. Test these parameters rather than automatically adding an alkalinity supplement. KH Plus or KH Buffer may be used when testing shows a separate alkalinity correction is needed; adding Ca Plus is not by itself a reason to raise KH.