Need ADVICE: 3700gph pump - what size plumbing

[BigLinc]

i just set up a 1200g indoor pond (pics in indoor pond) and i got a 3700gph pump, what size plumbing? 1.5" or 2" or?

 

[BigLinc]

went with 1.5"

hope it works out, hard to get advice around here sometimes

 

[Toby_H]

I think your question was worded to vague for an accurate answer to be offered without askign a bulk of questions...

Are you looking for a single overflow? Will the "pond" be elevated enough to create a siphon that reasons maximum capacity for pipe diameters? Without knowing a lot more abotu the system really the best we can do is direct you to a source of reliable information... such as this sticky - http://www.monsterfishkeepers.com/forums/showthread.php?t=205645

Good luck and I'll be going to the pond forum to check out what you've got so far.

 

[BigLinc]

I think your question was worded to vague for an accurate answer to be offered without askign a bulk of questions...

Are you looking for a single overflow? Will the "pond" be elevated enough to create a siphon that reasons maximum capacity for pipe diameters? Without knowing a lot more abotu the system really the best we can do is direct you to a source of reliable information... such as this sticky - http://www.monsterfishkeepers.com/forums/showthread.php?t=205645

Good luck and I'll be going to the pond forum to check out what you've got so far.

this is what im working with, the brute trash can will be the filter and fed from the top to let gravity do the draining back to the pond

 

[FSM]

Is the pump going to be submerged?

 

[BigLinc]

yes, in the pond

 

[bitteraspects]

a single 1.5" is not going to give you anywhere near the flow you need. you will either need to make multiple 1.5" pipes coming from the filter, or go with something much bigger. even after factoring in the head pressure, youre still looking at needing around a 3" pipe.

 

[BigLinc]

ok, the fitting on the pump is 1.5", is it ok to run 1.5" to the filter and two 1.5" returns to the pond?

 

[CrAzYNeSs]

ok, the fitting on the pump is 1.5", is it ok to run 1.5" to the filter and two 1.5" returns to the pond?

I don't see why not. I would have two returns, but on opposite sides of the rather large pond. This way it would maximize surface agitation and water flow.

 

[CrAzYNeSs]

The only problem I foresee is that the return will not be able to keep up with the pump. 3700GPH being FORCE fed into a sump, and a gravity drain of only two 1.5" pipes will simply cause an overflow in the sump.