it depends on the aerator , I have a bx 24 with a 48 inch ,its great . I also have a NH 1925 with a ryanair 72 inch ,it weighs close to 1500 lbs . The bx 24 wouldnt be able to even lift it .
Too big, I pull a 50" with my B2620 and to have enough weight for proper core depth you won't be able lift it. My tractor gets light in the front even with the loader on. Every 72" core aerator I've seen is pretty hefty even without weights.