Step 3 — Aragonite Enhancers™

The three elements that build coral skeleton.

Once your nutrients are under control (Step 2), it's time to maintain the CAM parameters — Calcium, Alkalinity, and Magnesium — that let corals build dense, stable aragonite instead of brittle calcite. Corals absorb these elements continuously, so they need steady replenishment.

Open the dosing app

The CAM model

Aragonite is preferred over calcite in reef tanks for its resistance to pH swings, greater hardness, and density — but building it takes all three of these in balance.

C

Calcium — Aragonite A™

Target 405–440 ppm. Too much drops alkalinity; too little slows coral growth and destabilizes other elements.

A

Alkalinity — Aragonite B™

Target 7.4–10.5 dKH (132–188 ppm). Too low and tissue detaches; too high and coral tips burn.

M

Magnesium — Aragonite C™

Target 1230–1310 ppm. Low magnesium causes more frequent alkalinity swings and coralline bleaching.

The full Step 3 lineup

Aragonite A, B, and C work as a team — dose them together for the full major, minor, and trace element profile. Bio-Kalkwasser is an optional pH-and-calcium booster on top.

CALCIUM

Aragonite A™

Ionic and complexed calcium plus strontium and barium. Available as liquid or bulk powder.

250–5000ml, or 3.9kg powder Shop Aragonite A →
ALKALINITY

Aragonite B™

Carbonate, hydrogen carbonate, and buffers to stabilize pH and build strong aragonite.

250–5000ml, or bulk powder Shop Aragonite B →
MAGNESIUM

Aragonite C™

Ionic and complexed magnesium plus sulfate and trace elements.

250–1000ml Shop Aragonite C →
KALKWASSER

Bio-Kalkwasser™

Calcium hydroxide dosed at night to counter the natural pH drop and add calcium simultaneously.

Powder, mixed with RODI Shop Bio-Kalkwasser →

Not sure where your CAM parameters stand?

The Quantum dosing app calculates exact amounts for your tank size and current readings.

Open the dosing app

Aragonite Series

Aragonite A™ - Calcium - Quantum Usa Saltwater Aquarium Products

Aragonite A Calcium
from $22.49
from $22.49
Aragonite A Powder

Aragonite A Powder
from $79.99
from $79.99
Aragonite B Powder

Aragonite B Powder
from $48.99
from $48.99
Aragonite B™ - Alkalinity - Quantum Usa Saltwater Aquarium Products

Aragonite B™ Alkalinity
from $22.49
from $22.49
Aragonite C™ - Magnesium - Quantum Usa Saltwater Aquarium Products

Aragonite C™ Magnesium
from $22.49
from $22.49
Bio-kalkwasser™ - Quantum Usa Saltwater Aquarium Products

Bio-Kalkwasser™
from $27.99
from $27.99
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