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Nutrient management in barramundi ponds

Website/Report

(not documented)

Project lead

Partnerships

(not documented)

Industries

Fishing

Activities

On-ground work

Case study type

(none)

Funding source

Good Fortune Bay Fisheries

Funding amount

$30,000

In-kind contribution

(not documented)

Start date

20 July 2018

End date

Ongoing

Summary

Diatomix has been used to reduce ammonia and nitrate levels in ponds on a freshwater Barramundi Farm.

Funding amount for this project is provided on an annual basis.

Benefits

Reducing concentrations of ammonia, nitrate and orthophosphate is associated with the reduction in both blue-green algae and macrophyte weeds such as Cabomba. This greatly assists in reducing operational time to manage weeds as well as improve water quality for growing fish and avoiding poor flavours in fish flesh.

Lesson

The management of nutrient levels requires consistent monitoring in biological systems carrying large biomass of farmed fish.  Unlike wastewater systems that are generally consistent, the growth and feed rates of fish alter the profile of ammonia and nitrate in the water and weekly monitoring of these values ensures that the dose of Diatomix is optimal and therefore continues to reduce these levels.

Reference ID

(none)

Last updated: 20 September 2018

This page should be cited as:

Nutrient management in barramundi ponds, WetlandInfo 2014, Department of Environment and Science, Queensland, viewed 31 January 2020, <https://wetlandinfo.des.qld.gov.au/wetlands/resources/tools/wetland-project/nutrient-management-in-barramundi-ponds-c67f/>.

Queensland Government
WetlandInfo   —   Department of Environment and Science