Is biofloc fish farming actually profitable or is it overhyped?

Be honest with yourself first, because biofloc is heavily marketed and many beginners lose money. It can be profitable for a skilled operator who has cheap power, a reliable market and strong water management skills, but it is not the easy passive income shown in social media videos. The big risks are power and aeration failure, floc crash, disease, and selling fish like tilapia or pangasius at low farm gate rates that may not cover your high running cost. Many first timers quit within a year or two. If you still want to try, start with one or two tanks, treat the first year as learning, and prove your market before scaling. Do not borrow heavily for a full unit on the strength of online claims. Get a cost and income estimate verified by your district Fisheries department or a working farmer near you.