Reef Octo Bio Churn Reactor 150 INTOur Bio Churn reactors are for those that demand the ultimate control over your Bio pellets solid carbon dosing. The superior Churn Style design easily fluidizes large amounts of bio pellet media without blasting it with outrageous flow just to fluidize the media, which is a commonly found on other Bio Pellet reactors in the market today. The unique motion these innovative reactors produce allow for much greater suspension of the media in a cyclone