Hondatek
Aquarium Advice Addict
It is very hard to tell how to hook it up just by pictures. Are all the pipes the same diameter? The only thing i can tell you for sure two pipes go from the tank to intake section of your sump and one from the return pump on the opposite end the sump . I would guess the first two holes in your tank or to sump and the one in the end is the return. Once again it's very hard to tell you exact directions without being there.