Calculating Pump Loss

[Huskymaniac]

Is there an online calculator that helps calculate pump head loss? I plumbed a 120 watt pentair uv sterilizer and am trying to dial in the flow through the unit at roughly 600- 800 gph. I have a Jebao DCP 8000 and figured through the 8ft of tubing I am around 1000 Gph. That doesn't account for reducing the piping from 1 1/4 to 1 inch and 4 right angles. This is on a reefer 750 and know the max flow they can handle through the overflow is 600ph or flow so I wonder if that will be my best gauge?

 

[Earl A]

Is there an online calculator that helps calculate pump head loss? I plumbed a 120 watt pentair uv sterilizer and am trying to dial in the flow through the unit at roughly 600- 800 gph. I have a Jebao DCP 8000 and figured through the 8ft of tubing I am around 1000 Gph. That doesn't account for reducing the piping from 1 1/4 to 1 inch and 4 right angles. This is on a reefer 750 and know the max flow they can handle through the overflow is 600ph or flow so I wonder if that will be my best gauge?

Check this out:

 

[Huskymaniac]

Check this out:

Thanks. That's how I got to the 1000 gph not accounting for reducing pump 50% and the right angles?

 

[Earl A]

Can you measure the amount that comes out into the aquarium into a container over 10 seconds and then calculate gph from there?

 

[Huskymaniac]

Can you measure the amount that comes out into the aquarium into a container over 10 seconds and then calculate gph from there?

Good idea but the return is split into the tank and hard plumbed. Not going to be really easy.

 

[Huskymaniac]

I guess the most important question is how much flow is reduced on a dc pump by reducing the power by 50%. Does that automatically equate to a 50% reduction in Gph?

 

[Earl A]

I guess the most important question is how much flow is reduced on a dc pump by reducing the power by 50%. Does that automatically equate to a 50% reduction in Gph?

I wouldn’t bet on it. But, I can’t really say.

How about measuring from one split, and then the other?

 

[Huskymaniac]

Problem is its hard plumbed so really cant lift the nozzle up high enough to get a bucket under it.