Perbedaan Pertumbuhan Ikan Nila (Oreochromis niloticus) Yang Dipelihara Dalam Sistem Bioflok Pada Kondisi Indoor Dan Outdoor

Abstract

The experiment aims to analyze the formation of biofloc volume and the growth of nile tilapia reared in a biofloc system at indoor and outdoor conditions. A Student’s t-test designed with two treatments and six replicates, namely P1 (biofloc in indoor condition) and P2 (biofloc in outdoor condition) was applied. The result of statistical tests with 95% of confidence level showed that the absolute weight significantly differs (p < 0.5) between the indoor biofloc system from the outdoor biofloc system. P2 treatment (outdoor) had a higher average weight growth value than P1 treatment (indoor). The floc volume formed during 30 days of P2 treatment (outdoor) showed a higher abundance of 29.9 ml/l compared to P1 treatment (indoor) of 26.9 ml/l. The water quality parameters during experiment had a range of values tolerated by nile tilapia.