Closed Loop Question

sandry75 · 09/26/2007, 04:30 AM

Hi all,

I am looking to set up a closed loop system on my 80gal to increase flow and would like to know how this is normally done. It seems that when I run the loop from the sump the overflow (one 1) cannot handle it and I get a lot of air in the system. I have a MAG5 running the sump and a Quiet One 4000 (1000gph) I want to run the loop with. Should I run the loop completely independent from the sump?
Any suggestions would be appreciated

Sandry75

eckrynock · 09/26/2007, 04:53 AM

Quote:

Originally posted by sandry75
Should I run the loop completely independent from the sump?

That's basically the definition of a closed loop. Taking water from the main tank and pumping back in with multiple outlets. I have a Dart on my 90. The closed loop is a ring of pvc around the top with 10 outlets spaced around the tank. I have a valve on the outlet side of the dart so I can throttle back the flow. You can have 2 outlets or 10 if you want. Basically, the more outlets on your closed loop, the more random the flow. Here's a pic of my setup.

sandry75 · 09/26/2007, 05:14 AM

Thanks Ed,
I have the PVC loop setup around the top perimeter with 4 outlets. How many gph is that pump? Looks like a ton of flow?

eckrynock · 09/26/2007, 06:41 AM

3600 gph. That's 360 gph per outlet minus headloss which is pretty minimal.

4 outlets is probably enough with a 1000 gph pump. You might want to add more outlets now and just cap them off until you could upgrade to a bigger pump. That will also give you the option of adjusting which outlets are open and directing flow.

09/26/2007, 04:30 AM	#1
sandry75 Premium Member Join Date: Jan 2004 Location: Hopatcong, New Jersey Posts: 107	Closed Loop Question Hi all, I am looking to set up a closed loop system on my 80gal to increase flow and would like to know how this is normally done. It seems that when I run the loop from the sump the overflow (one 1) cannot handle it and I get a lot of air in the system. I have a MAG5 running the sump and a Quiet One 4000 (1000gph) I want to run the loop with. Should I run the loop completely independent from the sump? Any suggestions would be appreciated Sandry75 __________________ All my life, I always wanted to be somebody. Now I see that I should have been more specific! Current Tank Info: 26gal Reef / 80Gal Reef / 30 Gal FOWLR

09/26/2007, 05:14 AM	#3
sandry75 Premium Member Join Date: Jan 2004 Location: Hopatcong, New Jersey Posts: 107	Thanks Ed, I have the PVC loop setup around the top perimeter with 4 outlets. How many gph is that pump? Looks like a ton of flow? __________________ All my life, I always wanted to be somebody. Now I see that I should have been more specific! Current Tank Info: 26gal Reef / 80Gal Reef / 30 Gal FOWLR

09/26/2007, 06:41 AM	#4
eckrynock Premium Member Join Date: Apr 2005 Location: Indianapolis Posts: 733	3600 gph. That's 360 gph per outlet minus headloss which is pretty minimal. 4 outlets is probably enough with a 1000 gph pump. You might want to add more outlets now and just cap them off until you could upgrade to a bigger pump. That will also give you the option of adjusting which outlets are open and directing flow. __________________ Ed Genesis 1:21 Current Tank Info: 90 gal