backyard pond/waterfall pump question....

Gil BullyKatz

Gil BullyKatz

NAXJA Forum User
Location
2003UB313 Planet ERIS
Doing a little aquascaping in the backyard...

After doing a little modifying....

The existing water pump (rated @ 250gph) is not moving the water fast enough...

but, I have two of them.

Is there a way to combine their output using T's?

Is it not kosher?

Or just shelve the both of them and buy a bigger one?

here is a pic and specs of what I have:

PM2Lg.jpg


Pump Specifications

Dimensions (L x W x H) 5.0" x 3.8" x 4.2"
Voltage 120 V/ 60 Hz
Power Consumption 24 watts
Max Flow Rate @ 1' Head 250 GPH
Max Head 7.0'
Inlet Size ½" FPT
Outlet Size ½" MPT
Cable Length 18'
Warranty (excludes impeller) 3 Years

Pump Performance


@ 0' 275 GPH
@ 1' 250 GPH
@ 2' 210 GPH
@ 3' 170 GPH
@ 4' 125 GPH
@ 5' 75 GPH
@ 6' 20 GPH
 
I you really want peak output from them, you would need to run two complete sets of lines. Waterfall or fountain?

A fountain won't really allow you to run dual lines, but it would be quite simple to do in a waterfall setup.
 
We used a huge sump pump for our waterfall at my parent's old house. It did have to push the water up a 20' incline though, so it may be overkill for your application.
 
250 GPH = 1 gallon every 15 seconds......Tooo long to wait.

You probably want something like a gallon every 2 seconds -- if not more.

That's at least 1800 GPH.
 
How many gallons is your pond? You need to have a flow of at least half of that. That is if you want it to be clear and for the pond life to enjoy its stay. I run a 3000 gph pump on my pond and waterfall. The koi and plants love it. As for your two pumps, just as said before, you would have to run seprate lines to get the best flow. Hope this helps, I do ponds on the side.
Jed
 
Gil, I don't know if you remember the flow I have on my waterfall, but that's a 3500 gph. I think you would want something in the 1200 - 2000 range for the size of your watercourse.

yardandsunroom_009.sized.jpg
 
lesslimited said:
Gil, I don't know if you remember the flow I have on my waterfall, but that's a 3500 gph. I think you would want something in the 1200 - 2000 range for the size of your watercourse.

yardandsunroom_009.sized.jpg
Click to expand...


Oh I remember...

I've got pictures of it and referenced it for my scaled down lil project.

I ran out of field stones halfway thru my build.

They want $150 for a 1/2 ton of them delivered (medium sized)

Now is one of those times I wish I had a van or a pickup.

:D
 
You can run both pumps into a 3/4inch or 1 inch line. That should increase the volume of water moved a little. I'm assuming that's what your looking for.
The existing water pump (rated @ 250gph) is not moving the water fast enough...
Click to expand...
To increase the velocity of water in the pipe (make it go faster) you would actually go with a different diameter pipe. After looking at that pump curve however, it may not do much good to go with a different diameter. That's a hell of a loss at only 6ft of head. If your max head on the pumps is 7ft than it's really not going to matter much what you do. Even with two pumps hooked up they are maxed out. I would find a pump with a higher discharge head. You can always put in a valve and throttle it back if it's too much flow.
 
hey gill, total threadjack, is that the laughing man icon from the ghost in the shel series?
 
Haleyes said:
Raven could take Polly Pocket white water rafting with that one!
Click to expand...

It was only 20 more bucks to go from 2000 to 4200 gph. That's gotta be worth 20 bucks.

The problem isn't the flow, it's the 6 feet of head. You need a lot of pump for some head like that :D
 
You must log in or register to reply here.
Back
Top