The other feed related source of waste is uneaten feed. Farmers have enormous economic incentive to waste as little as possible. New technologies, such as underwater video cameras, are further reducing feed waste. Other Environmental Initiatives Aqua-Cage has tried to be environmentally friendly when the opportunity arises. Two stroke out-board engines have been replaced by four stroke engines.
Most feed is purchased in bulk, eliminating tens of thousands of plastic bags per year.
Only environmentally-friendly cleaners are used. Other cage farms have their own environmental programs. Most feed used is a low pollution type. One farm has been working with a local University on biochemical oxygen demand and COD research. Another farm has installed a system which draws water from the bottom, aerates it and returns it to the bottom.