Effects of fish stocking density on water quality and the growth of red tilapia and vegetables in microalgae-aquaponic systems

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dc.contributor.authorCo, Thi Kinh
dc.contributor.authorNguyen, Thanh Nho
dc.date.accessioned2025-02-11T08:13:53Z
dc.date.available2025-02-11T08:13:53Z
dc.date.issued2024
dc.description10 tr.
dc.description.abstractThis study investigates the impact of fish stocking density on water quality, red tilapia (Oreochromis sp.) growth, and mustard green (Brassica integrifolia) growth in microalgae-aquaponics systems. Three densities were tested: D1 (90 fish/m³), D2 (70 fish/m³), and D3 (50 fish/m³). Water quality monitoring showed that TAN, NO₂⁻, and NO₃⁻ levels increased with fish density, while phosphate levels remained relatively stable. D1 had the highest total fish weight gain but a lower weight gain rate (91.9 %) compared to D2 (105.6 %) and D3 (134.1 %). D3 had the highest average weight gain per fish (67.78 g) and the best survival rate (100 %), whereas D1 had the lowest survival rate (94 %). Mustard greens grew best in D1. Microalgae density increased during experimental time, with D3 showing the highest biomass in both the algal and fish tanks. The results suggest that higher fish densities promoted plant growth, while lower densities benefited fish and microalgae, thus offering insights for optimizing recirculating microalgae-aquaponics systems.
dc.identifier.citationNguyen Tat Thanh University. (2024). Journal of Science and Technology - NTTU, Volume 7, Issue 5. ISSN 2615-9015
dc.identifier.issn2615-9015
dc.identifier.urihttps://repository.ntt.edu.vn/handle/298300331/212
dc.language.isoen
dc.publisherNguyen Tat Thanh University
dc.relation.ispartofseriesJournal of Science and Technology - NTTU; Vol. 7, Issue 4
dc.subjectMicroalgae-aquaponics
dc.subjectChlorella vulgaris
dc.titleEffects of fish stocking density on water quality and the growth of red tilapia and vegetables in microalgae-aquaponic systems
dc.title.alternativeVo, Thi Dieu Hien
dc.typeArticle

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