Description
Quantum Aragonite A 5L — Bulk Liquid Calcium Supplement for Large Reef Systems and Coral Farms
Large stony coral systems can consume 10 to 20 ppm of calcium a day, and at that rate only a bulk container makes sense. Quantum Aragonite A 5L (SKU: QA101010) is the calcium part of the three-part Aragonite system in its largest size, a solution of calcium, strontium and barium in deionised water, dosed with Aragonite B for alkalinity and Aragonite C for magnesium. The strength is the same as the bottles: 1 mL per 100 L raises calcium by about 2 ppm, so a 500 L system consuming 10 ppm a day needs around 25 mL.
The target remains 405 to 440 ppm calcium, and the daily rate of 0.5 to 1.0 mL per 100 L is a starting point that heavily stocked systems will often exceed once testing shows the real consumption. The 5 L container’s capful holds 20 mL. As with the smaller sizes, the solution is not to be shaken and should be dosed into high flow, separately from the alkalinity part. It is suited to dosing pumps, and a 5 L container will typically be plumbed straight into a doser line. At 0.75 mL per 100 L, 5 L sustains a 1,000 L system for about twenty-two months.
Usage & Application
When to Use
- Large reef displays: Systems of 500 L and more with a heavy stony coral load.
- Coral farms and frag racks: Grow-out systems where calcium demand is high and constant.
- Multi-tank dosing lines: One container feeding the calcium channel on several systems.
- Retail holding systems: Shop tanks keeping stony corals at a stable calcium level.
Dosing & Administration Guide
- Base the rate on consumption: Start at 0.5 to 1.0 mL per 100 L per day and raise it as tests show calcium falling.
- Avoid shaking the container: Draw from it or pump from it without agitation.
- Dose into high flow: Keep the calcium line well away from the Aragonite B and C lines.
- Weekly tests: Hold 405 to 440 ppm, adjusting by the 2 ppm per mL per 100 L rule.
Product Specifications & Highlights
Key Features
- Complete calcium part: Calcium with strontium and barium in deionised water.
- Bulk economy: 5 L for systems that dose tens of millilitres a day.
- About 2 ppm per mL per 100 L: The same strength as the smaller bottles.
- Doser-ready: Suitable for direct connection to a dosing pump, saving the refilling a small reservoir would need.
- 20 mL capful: Sized to the container for hand dosing on large tanks.
Product Details
- Brand: Quantum (Reef Essential range)
- SKU: QA101010
- Barcode (GTIN/UPC): 0706502801267
- Product Type: Additives & Supplements > Calcium Supplement
- Net Volume: 5 L
- Dose Rate: 0.5 to 1.0 mL per 100 L per day
- Effect: 1 mL per 100 L raises calcium by about 2 ppm
- Target Range: Calcium 405–440 ppm
- Handling: Do not shake; dose into high flow, separately from the alkalinity part
- Dosing Pump: Suitable
- Capful: 20 mL
- Target Environment: Reef aquariums, dosed with Aragonite B and C


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