Self-weighted Bio-Weave diffuser hose is a popular method of introducing air and oxygen into hauling tanks and culture tanks where durability is important. It is made of a strong, long-life woven material designed to last for years. Operating range is 0.2-0.6 CFM per foot. The diffuser surface is a soft polyester fiber for easy bending. Because no hold-down device is required, placement and removal is simple. These medium bubble diffusers come with hose fittings (including a cap for the male end) and a 1/4″ male barb adapter for the female end. Bio-Weave has about a 20-inch H₂O resistance to air flow, so it is marginally compatible with regenerative blowers.