Water Quality Remediation Using Geotextile in Fish Hatchery Systems
Abentin Estim* and Saleem Mustafa
Borneo Marine Research Institute, Universiti Malaysia Sabah, Malaysia
- *Corresponding Author:
- Abentin Estim
Borneo Marine Research Institute
Universiti Malaysia Sabah
88999 Kota Kinabalu, Sabah
Jalan UMS, 88400
Kota Kinabalu, Sabah, Malaysia
E-mail: [email protected]
Received Date: April 29, 2014; Accepted Date: June 26, 2014; Published Date: July 07, 2014
Citation: Estim A, Mustafa S (2014) Water Quality Remediation Using Geotextile in Fish Hatchery Systems. J Aquac Res Development 5:244 doi:10.4172/2155-9546.1000244
Copyright: © 2014 Estim A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This study was designed to use Aquamat™ in the daily exchange and flow-through culture systems of fish hatchery for improving the quality of seawater. Aquamat™ is a commercial innovative product fabricated from highly specialized synthetic polymers that forms a three dimensional structure. Results showed that the Aquamat™ 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 Aquamat™ than the culture tank without Aquamat™. Fish biomass gain was significantly higher (F=2.177; t=-4.296; P=0.001) in the culture tanks of with Aquamat™ than without Aquamat™. The bacterial density was significantly higher (F=11.437; df=2; P=0.000) on the surface of Aquamat™ than in the seawater of culture tanks with and without Aquamat™. This study suggests that the Aquamat™ 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 Aquamat™, reduced TSS concentration in the water with culture system. The surface of Aquamat™ 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 Aquamat™ increased the NO2-N and NO3-N concentrations in the culture system. This study suggests that the Aquamat™ 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.