Calculate sump flow rate

[QuinnLee512]

I have a klir di-4 fleece filter. It's rated at 750gph max. How do I calculate how much flow is going through my sump? I'm debating whether to add a 2nd klir.

 

[DeniableArc]

I have a klir di-4 fleece filter. It's rated at 750gph max. How do I calculate how much flow is going through my sump? I'm debating whether to add a 2nd klir.

Your sump flow is going to match your return pump flow minus head pressure.

 

[Dan_P]

I have a klir di-4 fleece filter. It's rated at 750gph max. How do I calculate how much flow is going through my sump? I'm debating whether to add a 2nd klir.

You may have to measure it. Either measure the water coming into the aquarium or into the sump, which ever is easier.

 

[Fatrip]

Agreed with DeniableArc, flow rate is dependent on the outflow pump minus the head pressure. So your good if your pump is less than 750gpm, or you should be able to find a head pressure chart for your specific pump if its more than 750 gpm.

 

[QuinnLee512]

I do know the flow going into my tank. I have a flow meter on each return line. The flow meters are placed right before it enters the tank and after pretty much all the plumbing. Both return lines read roughly 220gph. So everyone is saying to add both the return flow values and that's it? It has nothing to do with how open the gate valve is?

 

[Fatrip]

I do know the flow going into my tank. I have a flow meter on each return line. The flow meters are placed right before it enters the tank and after pretty much all the plumbing. Both return lines read roughly 220gph. So everyone is saying to add both the return flow values and that's it? It has nothing to do with how open the gate valve is?

Adding those 2 together is the flow. Nothing to do with the restriction of the gate valve. But those 2 numbers added together will also give you the flow into your tank, as water will only move out of your tank and through your sump as fast as the return pump is pumping the water through the system.

 

[J1a]

D

I have a klir di-4 fleece filter. It's rated at 750gph max. How do I calculate how much flow is going through my sump? I'm debating whether to add a 2nd klir.

Take not the fleece max rating generally can only be achieved by elevating the filter out of the water as much as possible.

 

[QuinnLee512]

Thanks everyone. Seems this was a lot easier than I thought. So my flow rate is roughly 440gph. I have a vectra L2 but I only run it at 33% because my UV requires a certain amount of flow.