It's not food in the bag, rather food grows in and around the bag. The pieces of material inside the mesh bag are a dense, plastic fiber, similar to the consistency of a coarse steel wool pad. It will never decompose or rot. They come from the technology and manufacturing process of
FTW's Floating Treatment Wetlands.
The food for the fish grows on the plastic and PVC fibers and limbs, starting with Bio film, Periphyton, algae and insects. This magic mix of nature's finest converts nutrients like Phosphorus and Nitrogen into this food. Another cool benefit is while it is feeding the fish using these unwanted, often excessive nutrients, it will clear and clean your water, without any chemicals.
Large scale water issues require large scale answers. These Floating Treatment Wetlands/Islands are being used all over the world to improve water quality and improve habitat. The more surface area installed, the faster the results can be seen. Circulation and aeration speed up the process.
