Performance Evaluation of a Peri-Urban Aquaponics System for Loose-Leaf Lettuce (Lactuca sativa)

ANTHONY ORTEGA

doi:10.56093/ijas.v96i7.169927

Authors

ANTHONY ORTEGA BULACAN AGRICULTURAL STATE COLLEGE

https://doi.org/10.56093/ijas.v96i7.169927

Abstract

This study evaluates the performance of a peri-urban aquaponics system designed for cultivating loose-leaf lettuce, with a focus on system design, hydraulic performance, and crop productivity. Two configurations were evaluated: the existing setup and a modified system developed based on identified design limitations. Structural assessments confirmed that all major components, including the fish tank, settling basin, biofilter, grow trays, and sump tank, were free of defects or leaks. Flow rates across both systems ranged from 1.72 to 2.95 L/min, with the modified system achieving a stabilized flow of 2.0 L/min, resulting in more uniform water distribution and reduced overflow. Enhancements to the filtration system significantly improved hydraulic consistency and nutrient delivery. The modified setup produced lettuce with a higher average fresh weight (43.82 g) compared to the baseline system (22.91 g). A t-test confirmed the differences to be statistically significant (p < 0.01). These findings underscore the importance of precise hydraulic regulation, effective biofiltration, and balanced lighting in optimizing the performance of aquaponic systems. The study provides practical design recommendations for developing efficient, low-maintenance systems suited to sustainable urban and peri-urban agriculture.

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References

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