... packing's surface and increase wettability. Igel-ball/water treatment Igel -ball is a common bio-filter, though long-term improvements of ... by: small water resistance, excellent air permeability, the majority of bio-ball diversion design, such as the diversion board, lead groove may ... Igel balls combine with organic waste to dissolve it.Igel Ball is also used in hatcheries, tropical fish farms. Waste ...