previously filled with 1.5 L of water
from either the BFT tank or the control tank (further called “culture
water”) at a density of 15 fish/tank (10 fish/L). Feeding was performed
using a commercial feed (40% protein) (PT. Matahari Sakti, Indonesia)
at a level of 40% on the initial fish biomass per day, spread over 4
times a day. For the tanks containing BFT water, molasses (53% C) was
added daily at an estimated C/N ratio of 10. Artificial light was provided