The investigation of the effect of different protein content in fish food on the average weight of Lactuca Sativa under SRAPS aquaponics condition

Abstract

Commercial aquaponics for crop production is a sustainable agricultural technique that functions based on the merging of three biological systems: crops, fish, and nitrifying bacteria. However, finding the right balance and factors needed for the three biological systems to achieve high and efficient crop productivity that may satisfy commercial needs still requires further study, especially aquaponics which combines aquaculture and hydroponics in a single cycle, namely the SRAPS system. In this paper, three trials of the growth of Lactuca sativa were done based on SRAPS conditions. The results demonstrated a visible difference between the two sets of common lettuce. The set given fish food with a high-protein content showed a larger average weight of common lettuce at harvest time compared to that of the set given a low-protein content.