I have a bathroom i'm plumbing in my basement that is stubbed. The stubb goes to a reservoir that i will then pump out with a sewage ejector pump. The reservoir top has 2 x 2" pipe coming out the top - 1 to connect to my sewage line and the other to the vent. I have all that setup correctly.

My question is since the sewage ejector pump is vented itself, do i still need to vent my drains (toilet, tub & sink).