A solution for sustainable aquaculture farming

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AQUA-Cal+ is a non-toxic, non-corrosive, safe and environmentally friendly water conditioner that meets many core needs in aquaculture.

AQUA-Cal+ is made by flash calcining a mixture of magnesite and dolomite to produce a unique, very high surface area powder, and then hydrating the powder to produce a slurry for ease of application to ponds. It has been specially formulated to impact on both the aqueous and benthic ecosystems in the pond.

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AQUA-Cal+ works as a water and pond bottom conditioner; clarifying the water, controlling pH and releasing alkalinity as required to aid in the digestion of organic matter.


With stabilised conditions in the pond, stress is reduced. When stress is reduced and water conditions are improved, both fish and prawns become healthier and more productive.


Conditioning with AQUA-Cal+ removes the iron by flocculation from the water, the turbidity and toxicity are significantly reduced, thus decreasing the subsequent mortality of the prawns.


As AQUA-Cal+ neutralises the pond bottom sludge and accelerates its breakdown, pond bottom septicity is prevented. AQUA-Cal+ also allows a more rapid break-down of the sludge, which helps release organic material for the growth of phytoplankton (natural food for shrimp), while binding the toxic contaminants. Subsequently, the smell of the sludge is greatly reduced, with less toxic compounds in water.

Customer Stories

Feeding the Growing Human Population \ Aquaculture
Shrimp farming in eastern China, Rudong Huang Xiaohua Farm

AQUA-Cal improves the quality of water and thereby promoting better and healthy aquatic life at Rudong Huang Xiaohua Farm, Jiangsu

Feeding the Growing Human Population \ Aquaculture
Yield Improvement in Shrimp & Prawn, IKerpan Farm

AQUA-Cal improves the quality of water and thereby promoting better and healthy aquatic life at IKerpan Farm, Kerpan, Malaysia.


Conditioning with AQUA-Cal+ removes the iron by flocculation from the water, significantly reducing turbidity and toxicity. The stocking of the pond after the water is conditioned reduces the subsequent mortality of the post-larvae.


Results from trials on both Pacific White Shrimp and Tiger Prawns show that AQUA-Cal+ has a superior performance to probiotics in controlling ammonia, nitrite and pond bottom sludge.

The data consistently shows AQUA-Cal+ stabilises alkalinity; suppresses extreme changes in pH; provides ingestible essential magnesium and calcium; reduces turbidity, improves light penetration; improves phytoplankton productivity; reduces toxic metals in the system (copper, zinc); and reduces ammonia and nitrite.


Because AQUA-Cal+ stabilises alkalinity, suppresses extreme changes in pH and provides ingestible essential magnesium and calcium, phytoplankton productivity is improved and toxic metals in the system (such as copper and zinc) along with ammonia and nitrite levels are significantly reduced.
Results observed in a trial on Monodon, in earthen ponds.

Relevant articles

February 18, 2019 \ Improving the Sustainability of Water Treatment
Restoration of a freshwater lake using Aqua-Cal+

Taman Tasik Aman. PJ. Kuala Lumpur   With the recent dreadful fish kills in the Darling River, the general public are becoming starkly

December 24, 2018 \ Feeding the Growing Human Population
AQUA-Cal+™ is now being used in factory shrimp farms in Northern China

China, with one-fifth of the world’s population, accounts for two-thirds of the world’s reported aquaculture production. China is one of

August 18, 2018 \ Feeding the Growing Human Population
AQUA-Cal+ continues to gain momentum in China

A second container of AQUA-Cal+ is on its way to Southern China following our very first shipment to China in June. China


People, unique technology, partners, and track record

  • Calix Technology

Faster reactivity = less costs

Calix core technology makes high surface area materials (with a honeycomb-like structure), giving you a price and a reactivity advantage.

Our materials are proving to have similar properties to highly active nano-materials, without the health/safety concerns and high cost, but with all the benefits.

To learn more about how Calix technology works, click here.

  • Calix supply chain – from mine to customer!

Calix is able to offer better service, reliability and performance to its customers because it controls the entire production process from mining of raw materials, processing and production.

Calix owns and operates a mine, production, testing facilities and close-to-customers manufacturing plants.

To find out more about continuity and security of supply, click here.

  • Continuous Improvement

Calix is committed to providing process development, manufacture, delivery and application of mineral based products and services that meet the needs of our customers.

We aim to ensure that quality is everyone’s aim throughout the organisation and that each employee has a sound understanding of the importance of our quality management system and their direct effect to our continuous success.

Our AS/NZS ISO 9001 certified quality system and safety, health and environmental management system are vital elements of our engineering and quality services.

For a copy of our Safety Datasheets, click here.

AQUA-Cal+ Distribution Partners

Calix has established a network of local distributors and partners who can deliver our solutions across the globe, to ensure you receive excellent customer service and support, wherever you are located. To find a partner near you, go to our Contact Us page.

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