The effect of Elodea densa on aquaculture water quality

• Published in: Aquaculture Vol. 84; no. 3; pp. 267 - 276
• Main Authors: Ng, W.J., Sim, T.S., Ong, S.L., Kho, Kevin, Ho, L.M., Tay, S.H., Goh, C.C.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 1990; Elsevier Science
• Subjects: ACUICULTURA; Animal productions; AQUACULTURE; AQUATIC PLANTS; AQUICULTURE; Biological and medical sciences; CALIDAD DEL AGUA; Fundamental and applied biological sciences. Psychology; General aspects; PLANTAS ACUATICAS; PLANTE AQUATIQUE; QUALITE DE L'EAU; WATER QUALITY; Freshwater environment; Breeding pond; Laboratory study; Monocotyledones; Angiospermae; Water quality; Hydrocharitaceae; Spermatophyta; Aquaculture
• ISSN: 0044-8486; 1873-5622
• DOI: 10.1016/0044-8486(90)90092-2

The effect of Elodea densa on aquaculture water quality in a 11.40 m 3 tank was examined. A total of 15 water quality parameters was monitored over a period of 4 months. Hourly samples were collected and analyzed to determine the variation in water quality within an 8-h working day. The aquatic plant tank removed 61.36 mg NO 3 −-N m −2 day −1, 2.27 mg NO 2 −-N m −2 day −1 and 9.09 mg NH 3-N m −2 day −1. Overall nitrogen removal was 25% of influent nitrogen concentration. The plant tank also reduced turbidity effectively. Harvesting the plants for sale did not severely affect the tank's performance except for the 3–4 days following a harvest. The results suggested that E. densa was an efficient plant for nitrogen removal, and fish and plant production might be combined to allow for water renovation and reuse on an aquaculture farm.