MitchM tank build

[MitchM]

As I'm not certain as to the success of my proposed setup, I think I'll see how the Dart pumps do before I start saving my pennies for $2000+ pumps.

I realize that the Seaswirl setup is limited by the Seaswirls, not the pump.

My biggest challenge is going to be adequately feeding whatever I keep in the tank for corals. Hopefully I can identify some zones where food will accumulate out of the circulation pattern.

Thanks.

[mr.wilson]

Don't let me talk you out of your Superdart pumps. They will serve you well for a closed loop system. They just need large plumbing and short runs without nozzle restrictions.

Take an extra day or two to play around with the plumbing before you ad salt & rocks. You will quickly see how they perform with the Seaswirls. You will also see how much force you get out of one lone sump return, alternating sides. You have to strike a balance between flow that reaches the opposite end of the tank without blowing the paint off of the corals on the way there

Your sump return line will need some nozzles to diffuse the flow. I would aim for a maximum of 1,000 GPH out of any one return port, but that's just my personal preference.

[MitchM]

I was thinking of 2" sump return lines with no nozzles and a gate valve to control the return flow.
How do you think the Dart would handle that?
The returns would be pointed along the back wall facing each other on opposite ends. No corals would be placed in the direct flow.