Which will I get more power out of?

I have a pump that does 4750GPH and I am going to get 3/4"pvc or 1/2".
I am trying to have the PVC end over the surface to make a a lot of air bubbles in the tank.

Or should I do 3/4" pvc from the pump and change it to 1/2" once the plumbing reaches the top of the tank?

The I.D threads on the pump is probly 2-3" and I have to get diff fitting to match the 3/4"/1/2" pvc.

Which would make the most pressure???????

Right now I have it split in both ends of the tank but I want more pressure, so I am going to do it with just one end piece

Thanks

balton777;1982760; said:

3/4" until the top seems like it would make more pressure than 1/2" all the way.

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since the I.D threads are pretty big, should I just do the same size I.D and the fit it to a 1/2" right before the canopy??

balton777;1982766; said:

That sounds like it would be the simplest way.


That's a lot of pressure.

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Which way???
Here is a pic of my pump...

CHOMPERS;1985027; said:

What kind is it? And what size are the threads? Did you check the pump curve for what that pump is going to actually pump?

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It is a Pacific Imports GX model. And where do I check the pump curve? It says 4750GPH on the pump???

I copied this from a link... http://www.pacificcoastimports.com/...D1213430193850X66A249A67A181E78303042B809&c=2


GX18000 water pump. 2.083 Amps 250 Watts 4750 gph 19' head pressure, 1 1/2" inlet and outlet. In-line or submersible, 33' UL approved cord, Includes suction screen. Various positioning of mounting plate provides vertical, or horizontal left or right of discharge. Great for ponds or large aquarium applications. Safe for fresh or saltwater. Unique state of the art design of the titanium encapsulated impeller. Even rocks or small debris can flow through without damage to the impeller or pump. Quiet. 11"L x 6"W x 7"H

4,050gph @4' head pressure
3,400gph @8' head pressure
2,257gph @12'head pressure
950gph @16' head pressure


Does this help??????? and I have it probly 3' of PVC (if that??)

CHOMPERS;1985070; said:

http://www.pacificcoastimports.com/...0501A97B101B202B14Y42634734X816&c=2&kys=&pg=1

4,050gph @4' head pressure
3,400gph @8' head pressure
2,257gph @12'head pressure
950gph @16' head pressure

At five feet, you'll have approx. 3887gph and at six feet, you'll have 3725gph. Either way, you'll have over 12 turnovers per hour. Are you still worried about having enough flow for bubbles?

Don't undersize your plumbing. If you do, you will be better off saving money with a smaller pump.

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Man, I wish I knew how to use a computer better to do a diagram of my set up. Ill take some pics tomorrow morn.

I am just trying to get the look of a strong flow of air bubbles breaking threw the water atleast 1ft deep. Right now with the plumbing at both ends, the air bubbles is probly 8-9" deep. I am just not sure if I need to have a big PVc at the beginning of the pump or a smaller one. I do know that at the end of the PVC, it just cuts off (in otherwords, I dont have any nozzle or nipple attatched to it) and maybe I should try to get something for the ends before I re-do my plumbing in to just one outlet