MLAND Repl Bio-Wheel Assy-99B
Marineland/Aquaria Bio-Wheel Replacent, this item is only the bio wheel. The bracket is sold seperately. - Irregular rotation of the Bio-Wheel is also normal. - Discoloration of pleated Bio-Wheel material is normal and desirable. - A Bio-Wheel rotating at any speed is working to eliminate toxic ammonia and nitrite.