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Shrimp farming in eastern China

Rudong Huang Xiaohua Farm - Jiangsu Province, China

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

case study summary

Challenges
  • Improve water quality
  • Improve shrimp yield
Objective
  • Improve survival rate
  • Solve problem of White Head disease
  • Increase harvest weight
Solution

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

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Benefits of AQUA-Cal

Increased yield

Improved water quality

Reduction in other water treatment chemicals

Introduction

Calix’s Aqua-Cal+ is a special formulation of Magnesium Hydroxide enhanced with Calcium. It improves the quality of water and thereby promoting better and healthy aquatic life. Aqua-Cal+ is non-toxic, non-corrosive, safe to handle and environment-friendly.

BACKGROUND

Huang Xiaohua Farm is a large-scale farm with 1000 x 200m3 ponds all under cover.
They grow White Shrimp with 2 crops per year.
Stock Density is 120 pcs/m3 with 90 day grow out.
Harvest size is 20 pcs/kg

WHAT AQUA-Cal+ ACHIEVED

1. Increase survival rate to 95%
2. White Head disease was eliminated by improving water quality.
3. Harvest weight was increased by more than 20%
4. Other chemical inputs were reduced

Solution

Using AQUA-Cal+ at 20 ppm for tank preparation we enabled the increase survival rate from 85% to 95%.

Weekly dosage of AQUA-Cal+ at 4 ppm was able to increase yield by more than 20%.

AQUA-Cal+ also produced healthier shrimp and solved the problem of dark brown water with a significant pungent odour.

Conclusion

Rudong Huang Xiaohua where impressed with AQUA-Cal+ and have now become a sub distributor in the Rudong area.

There are 30,000 ponds using the same culture method in Rudong district potential for AQUA-Cal+ is 600 m/t p.a.

Farmers comment. “My shrimp are more healthy, water is now a nice brown green with no bad smell. I reduced my input cost and increased yield”

The application

AQUA-Cal+ is a special formulated high surface area Magnesium Hydroxide enhanced with Calcium designed for use in aquaculture ponds.
AQUA-Cal+ is a water conditioner and acts to improve the overall water quality while delivering a number of unique properties to protect and enhance shrimp culturing:
  • Reduces the water turbidity
  • Effectively binds the iron and other heavy metals to prevent metal toxic
  • Stabilizes water alkalinity
  • Recondition and stabilize the bottom pH
  • Reduces the hydrogen sulphide (H2S)
  • Neutralize the nitrites, phosphate and ammonia
  • Flocking and break down of organic matter in the system
  • Digests the sludge and create a clean pond bottom
AQUA-Cal+ is non-toxic, non-corrosive, safe, environmentally friendly and 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.

Download the Solution Spec Sheet

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TECHNICAL WEBINARS

June 11, 2020 \ Feeding the Growing Human Population
Webinar – Optimization of Grow out conditions in aquaculture systems

In this webinar, we look at what are the best pond conditions for growth and how AQUA-Cal+ can help to achieve these conditions.

June 11, 2020 \ Feeding the Growing Human Population
Webinar – Control of Ammonia and Nitrite in aquaculture systems

In this webinar, we looked at the generation of Ammonia and Nitrite and the problems the farmer encounters. We then explored the role of AQUA-Cal+ in absorbing Ammonia via the Struvite reaction.

June 11, 2020 \ Feeding the Growing Human Population
Webinar – Pond sludge treatment remediation

In this webinar, we talked about sludge formation in aquaculture systems, what current treatment methods and the place of AQUA-Cal+ in a sustainable solution.

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June 27, 2020 \ Feeding the Growing Human Population
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The world’s population is expected to grow by over a third, or 2.3 billion people, between 2009 and 2050. This

June 11, 2020 \ Feeding the Growing Human Population
Webinar – Optimization of Grow out conditions in aquaculture systems

In this webinar, we look at what are the best pond conditions for growth and how AQUA-Cal+ can help to achieve these conditions.

June 11, 2020 \ Feeding the Growing Human Population
Webinar – Control of Ammonia and Nitrite in aquaculture systems

In this webinar, we looked at the generation of Ammonia and Nitrite and the problems the farmer encounters. We then explored the role of AQUA-Cal+ in absorbing Ammonia via the Struvite reaction.

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