Water quality remediation using geotextile in fish hatchery systems

Abentin Estim, and Saleem Mustafa, (2014) Water quality remediation using geotextile in fish hatchery systems. Journal of Aquaculture Research and Development, 5 (4). ISSN 21559546

[img]
Preview
Text
Water_quality_remediation_using_geotextile_in_fish_hatchery_systems.pdf

Download (50kB) | Preview

Abstract

This study was designed to use Aquamatâ„¢ in the daily exchange and flow-through culture systems of fish hatchery for improving the quality of seawater. Aquamatâ„¢ is a commercial innovative product fabricated from highly specialized synthetic polymers that forms a three dimensional structure. Results showed that the Aquamatâ„¢ reduced ammonia (NH3-N), total suspended solids (TSS) and dissolved oxygen (DO) concentrations in the daily exchange system but not in the flow-through system. Average values of NH3-N (F=0.028; t=-2.006; P=0.047), TSS (F=4.550; t=-2.787; P=0.006) and DO (F=25.085; t=-2.833; P=0.005) concentrations were significantly lower in the culture tank with Aquamatâ„¢ than the culture tank without Aquamatâ„¢. Fish biomass gain was significantly higher (F=2.177; t=-4.296; P=0.001) in the culture tanks of with Aquamatâ„¢ than without Aquamatâ„¢. The bacterial density was significantly higher (F=11.437; df=2; P=0.000) on the surface of Aquamatâ„¢ than in the seawater of culture tanks with and without Aquamatâ„¢. This study suggests that the Aquamatâ„¢ provides surface area for fish to hide from cannibalism activity, thereby reducing mortality. It was also found that the extra feeds and fish wastes attached to the surface of Aquamatâ„¢, reduced TSS concentration in the water with culture system. The surface of Aquamatâ„¢ also provided places for microbes to grow and increased the nitrification process. The nitrification processes converted NH3-N to NO2-N then NO3-N with help from nitrifier bacteria and DO concentrations, which reduced NH3-N toxicity in the culture system. However, result also showed that the Aquamatâ„¢ increased the NO2-N and NO3-N concentrations in the culture system. This study suggests that the Aquamatâ„¢ is still not capable of eliminating the entire amount of dissolved inorganic nitrogen in the culture system for water quality management in a fish hatchery system.

Item Type: Article
Uncontrolled Keywords: Ammonia; Fish hatchery; Geotextile; Nitrate; Nitrite; Water quality
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Depositing User: MDM FAUZIAH MATSIN
Date Deposited: 15 Dec 2014 07:16
Last Modified: 13 Oct 2017 03:37
URI: http://eprints.ums.edu.my/id/eprint/10147

Actions (login required)

View Item View Item

Browse Repository
Collection
   Articles
   Book
   Speeches
   Thesis
   UMS News
Search
Quick Search

   Latest Repository

Link to other Malaysia University Institutional Repository

Malaysia University Institutional Repository