Gate valve and DC pump

[dreamcatcherr9]

The valve on the drain has nothing to do with the flow through your sump. Set the speed of your pump(s) to achieve the desired flow through your system. You should do this with all valves wide open. The drains will run noisy but don't worry about it. Only focus on water flow.
Once you have the flow through the sump that you want, then you want to start shutting the valve on the full siphon drain. You want it set so that most of the flow goes through the full siphon drain with a small amount of flow going down the trickle drain. This will allow your drains to run quietly.

Thank you. Would you (could you) adjust display tank water height before or after flow adjustments?

 

[Water Dog]

DT water level height will be determined by the weir teeth on your internal skim box. So basically, you can determine your water level height by how you install your overflow set up.

 

[Brew12]

Thank you. Would you (could you) adjust display tank water height before or after flow adjustments?

DT water level height will be determined by the weir teeth on your internal skim box. So basically, you can determine your water level height by how you install your overflow set up.

+1 on this. It will change a little bit based on flow but not much. More flow raises level a little because it needs more space to get between the teeth.
To adjust levels in the overflow you can change the length of the stand pipes.

 

[SanFernandoValleyAIOReef]

You use a gate valve ONLY on the primary drain line of a Herbie or Beananimal set up... NEVER on a single drain Durso. I would contend that the gate valve on the primary drain is less about controlling flow and more about purging air out of the primary drain so that your overflow/drain system can run silently. Actual control of flow is done by the controller of a DC pump or by valving back an AC pump.

That’s what I was thinking, so if I have a dc pump I don’t plan to add manifold or change anything I don’t need any gate valves correct?

 

[SanFernandoValleyAIOReef]

+1 on this. It will change a little bit based on flow but not much. More flow raises level a little because it needs more space to get between the teeth.
To adjust levels in the overflow you can change the length of the stand pipes.

Hey how would I go about using a ac pump (sicce 4.0) on a 140 display with 1 return line & 1 overflow (durso) vs dc return pump, would I need a gate valve on the overflow If I use dc?