oh im good at plumbing now i hard plumbed this tank thats why when i change it im doin it right

and the iwaki is gonna become my return right now i just have a 1000gph rio that prolly needs a break
or should i get something a bit stronger maybe the snapper i have two overflows one in each corner with dursos that flow thru a 1" bulkhead so i want to get max flow because im starting to get red slime in my fuge because the flow is non existant

as far as which OM im thinking about the 4 way unless anyone else has a more economical solution to creating ocilating(sp?) flow. on my old bowfront i had a quiet one 3000 pushing thru a scwd and i had a deep output on one side and a shallow on the other and it rolled the water pretty well