water flow issue.

[Reefbound1]

Hey all, i want to move my sump skimmer and such sixteen feet away from the tank into another room on the same floor. it looks like after all the plumbing is in place and all setup it looks like the water will fall 18 inches in sixteen feet.
Does anyone think this will work or not? You have to imagine water going down a 1 inch diameter pipe on a diagonal 16 feet falling 18 inches from one end to the other.
The return will be a 3/4 inch pipe on a mag 950.Water flow will be from a CS100 to sump.

[spitefull]

Hi Reefbound, am i confused?? are you pumping water both ways??if so how can you balance the in and out. if your overflowing to a remote sump look online for a volume loss calculator for pipe. my experience has been if overflow opening and total length of pipe are equal size 2 things happen first the gurgle and burp then slow flow. if you start with 1" have your main longest run like 1 1/2

[Reefbound1]

Originally posted by spitefull
Hi Reefbound, am i confused?? are you pumping water both ways??if so how can you balance the in and out. if your overflowing to a remote sump look online for a volume loss calculator for pipe. my experience has been if overflow opening and total length of pipe are equal size 2 things happen first the gurgle and burp then slow flow. if you start with 1" have your main longest run like 1 1/2

no Im not pumping both ways,gravity from the cs100 overflow to the sump and then pumped back to the main via a mag 950.what your saying is I should use 1 1/2 pipe for the sixteen foot travel to the sump?

[reverendmaynard]

It should work with no problem. Oversizing the pipe is a good idea, however. You should even be able to get away with the entire drop directly behind the tank, and a horizontal pipe to the sump.

[Avi]

There's the issue of "head loss," in a configuration like that so it's critical for you to chose the right water pump that can overcome that kind of loss....Try using this to get you in the right direction:

http://www.reefcentral.com/calc/hlc2.php

[Reefbound1]

Originally posted by reverendmaynard
It should work with no problem. Oversizing the pipe is a good idea, however. You should even be able to get away with the entire drop directly behind the tank, and a horizontal pipe to the sump.

do you think that would work?basically that would be a L shape.would there be enough momentum to get the water to the sump? its only a 18 inch drop...



[QUOTE]Originally posted by Avi
There's the issue of "head loss," in a configuration like that so it's critical for you to chose the right water pump that can overcome that kind of loss....Try using this to get you in the right direction:
http://www.reefcentral.com/calc/hlc2.php [/QUOTE


if i added the numbers correctly the total losses on the pump I have(mag950) would just about equal the overflow I have using a 1 1/4 inch pipe.

[reverendmaynard]

Yes, I think it will, so long as it's a straight shot and you use 1.5" pvc. If you need a bunch of 90s or something, that could be a problem.

Is that 18" from the waterline of the display, or 18" from the bottom of the display?

[Reefbound1]

it wont be a straight shot... I will need three 90 elbows to get the water to the sump so it will be 90 from from overflow 16 foot run 90 left turn,3 inch 1 1/2,90 down turn into sump.

Unless I use rubber tubing then I wont need any elbows to and from...

[REV]

I would recommend using a slope on the longest portion of the drain at least. Why are you wanting to move your sump so far?? Have you considered noise of these long potentially gurgling pipes? Temp. loss/gain? That is a LONG run for your return pump. I would recommend going bigger... if you need to back off, put in a ball valve on the affluent side to control flow. I would also recommend a FEW disconnects along the way to aid with any future adjustments and/or cleaning. Good luck!

[Reefbound1]

Originally posted by REV
I would recommend using a slope on the longest portion of the drain at least. Why are you wanting to move your sump so far?? Have you considered noise of these long potentially gurgling pipes? Temp. loss/gain? That is a LONG run for your return pump. I would recommend going bigger... if you need to back off, put in a ball valve on the affluent side to control flow. I would also recommend a FEW disconnects along the way to aid with any future adjustments and/or cleaning. Good luck!

If the gurgle is to loud I could put a breather pipe halfway down the pipe,as for temp loss the plan is to keep a heater in the main and in the sump although it may take me under 80 degrees. There will be two unions at minimum to disconect.