Just wondering since I’m an amateur at this but…if I tee it and add another return line does that mean it will have to be an additional line that comes up and over the back wall…or would it be better to just do 2 drains & 2 returns?Yup, normal for a Bean Animal setup. As long as the return can handle the head from your pump, you're good to go. I would tee it off for added flow.