The benefits are slim, compared to LS,LR,SKIMMER ect..the only benefits i see is: having more water movement with the option to run carbon occasionally on that filter..other than that, i would take it off and throw it away..although theres those people that would NOT agree with me, but hey its your tank your choice..if anybody says that a Bio-wheel is needed in a reef then they're giving it TOO much credit...