One pump two returns?

[Shawn4455]

Im planning on setting up a larger drilled reef tank and wanting two returns on each side of the tank, is it possible to have one return pump and T off the return lines?

 

[HairyGary]

Yep. People do it all the time, especially with external overflows. One thought if the lines off the T are not even is to put ball valves on each side to regulate and equal return flow into the tank. I'm am doing same thing now in my new build.

 

[minus9]

Dual returns with single pump here. As mentioned, I put a ball valve on the side that's closer to the return to even the flow.

 

[Mike Kearns]

Is there an issue if the flow is not even?

 

[R.Weller]

If you have the space, I would use two DC return pumps with each set at < 50%. They will fail eventually (or they will need to be serviced), & this provides redundancy for your other life support equipment in the sump. Our left pump runs at 35% as it has a further distance to travel & the right at 30%. If we take one offline, we turn the other up to compensate.