Go Back   Aquarium Advice - Aquarium Forum Community > General Aquarium Forums > General Hardware/Equipment Discussion
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 11-27-2010, 12:47 AM   #1
Aquarium Advice Newbie
 
Join Date: Nov 2010
Posts: 5
How much return flow is too much from a refugium?

I recently picked up a 75g to upgrade my 29. It came with a 30L refugium/skimmer/etc. The tank was drilled and has 2 lines in the overflow to feed the refugium. There are also 5 bulkheads installed for return feed from the refugium. The previous owner had ball valves apparently on every bulkhead to control flow. I plan on utilizing the 5 ball valves along with an AquaEuro AE1000 pump rated at 1057gph. Question is, are the 5 bulkheads too much return? Should some of them be plugged up? The majority of other setups I've seen simply have the small knuckled black spouts for return (some are cone, others are fan shaped) and only 2-3 at that. These are 1" bulkheads so obviously the flow won't be as concentrated as the smaller spouts that I see typically. The other thought I had was to again go with the 5 return valves and just alternate them from day to day to change the flow in the tank. The bulkheads in the tank now just seem like too much from setups I've seen in the past. Any advice or opinions? Thanks in advance!
__________________

__________________
jdstank is offline   Reply With Quote
Old 11-27-2010, 01:17 AM   #2
AA Team Emeritus
 
Ziggy953's Avatar



POTM Champion
Tank of the Month Award
 
Join Date: Feb 2006
Location: Owings Mills, Maryland
Posts: 9,101
Take a picture of the tank and post it. I'm going to venture to guess that some of those holes are to be used as a closed loop.

Post pics if you can and lets have a look.
__________________

Ziggy953 is offline   Reply With Quote
Old 11-27-2010, 01:21 AM   #3
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,814
I agree with Ziggy. Sounds like those are for a closed loop. The two lines in the overflow are probably different sizes with the larger meant for the drain and the smaller meant for the return. That is the usual setup.
cmor1701d is offline   Reply With Quote
Old 11-27-2010, 01:27 AM   #4
AA Team Emeritus
 
Ziggy953's Avatar



POTM Champion
Tank of the Month Award
 
Join Date: Feb 2006
Location: Owings Mills, Maryland
Posts: 9,101
FYI, if the bulkheads are 1" they are probably meant to have 1" plumbing which means they are rated for 600gph. This applies to the drain line only.
Ziggy953 is offline   Reply With Quote
Old 11-27-2010, 02:47 AM   #5
Aquarium Advice Newbie
 
Join Date: Nov 2010
Posts: 5
Pics as requested....I did some looking into closed loop systems. I currently use Koralias so I don't see much need for the closed loop (unless someone else can enlighten me to any other purpose of a CLS aside from increased flow). So considering that, would it be smarter just to cap a couple of these off and run maybe 3 returns? The 5th is actually an over the top of the tank design that has the bulkhead positioned inside the overflow - that would likely be one that would definitely be capped off.

On the back of the tank I stuck a fitting inside each bulkhead to make them easier to see in the pic with the blacked out tank. The 2 on the lower left are coming from the overflow, all others lead back into the tank. These are only for visual purposes and not what was in the bulkheads when I picked up the tank. Most of the lines were glued and cut so 50% or so of the plumbing has to be redone.
Attached Thumbnails
Click image for larger version

Name:	tank back.jpg
Views:	61
Size:	26.9 KB
ID:	26203   Click image for larger version

Name:	intank.jpg
Views:	59
Size:	51.3 KB
ID:	26204  

Click image for larger version

Name:	intank1.jpg
Views:	70
Size:	50.4 KB
ID:	26205   Click image for larger version

Name:	intank2.jpg
Views:	70
Size:	38.2 KB
ID:	26206  

__________________
jdstank is offline   Reply With Quote
Old 12-02-2010, 01:57 PM   #6
AA Team Emeritus
 
Ziggy953's Avatar



POTM Champion
Tank of the Month Award
 
Join Date: Feb 2006
Location: Owings Mills, Maryland
Posts: 9,101
That is an interesting configuration and setup. You do not want to use the two lower center tank bulkheads as returns. If your pump is shut off it will drain the tank to that level.

If you don't want a CL system on your tank then cap the bulkheads and just put an over the top return line. from what I'm seeing the top two holes on either side of the tank look to be a few inches below the surface of the water level and could cause a problem if ever you lose power or turn your pump off.
Ziggy953 is offline   Reply With Quote
Old 12-02-2010, 06:08 PM   #7
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,249
Moved to General hardware and equipment discussion.
__________________

SITE ADMINISTRATOR

You can view many of my fish and corals in my photo albums in my profile.

View my tank


AA Community Rules|AA TOS

Forums 101 - posting, accounts, basics
melosu58 is offline   Reply With Quote
Old 12-03-2010, 03:25 AM   #8
Aquarium Advice Newbie
 
Join Date: Nov 2010
Posts: 5
Quote:
Originally Posted by Ziggy953 View Post
That is an interesting configuration and setup. You do not want to use the two lower center tank bulkheads as returns. If your pump is shut off it will drain the tank to that level.

If you don't want a CL system on your tank then cap the bulkheads and just put an over the top return line. from what I'm seeing the top two holes on either side of the tank look to be a few inches below the surface of the water level and could cause a problem if ever you lose power or turn your pump off.
Good advice...what I ended up doing was using the 2 top bulkheads which do sit about 3" below the water level but I installed an anti-backflow valve just off the pump. Water can only flow to the bulkheads that way, and any pump failure will simply result in the valve closing. Tried it already and it worked perfect! The lower bulkheads were capped, I can always remove if I ever decided to install a CL system but for now it's just too much plumbing for where the display tank is going to be and would become an eyesore since it would cause the tank to sit at a much greater distance from the wall.
__________________
jdstank is offline   Reply With Quote
Old 12-03-2010, 12:29 PM   #9
AA Team Emeritus
 
Ziggy953's Avatar



POTM Champion
Tank of the Month Award
 
Join Date: Feb 2006
Location: Owings Mills, Maryland
Posts: 9,101
Quote:
Originally Posted by jdstank View Post
Good advice...what I ended up doing was using the 2 top bulkheads which do sit about 3" below the water level but I installed an anti-backflow valve just off the pump. Water can only flow to the bulkheads that way, and any pump failure will simply result in the valve closing. Tried it already and it worked perfect! The lower bulkheads were capped, I can always remove if I ever decided to install a CL system but for now it's just too much plumbing for where the display tank is going to be and would become an eyesore since it would cause the tank to sit at a much greater distance from the wall.
Excellent solution. Just make sure to periodically test your check valve to make sure they haven't gotten gummed up. They will eventually need to be replaced or at the very least removed and cleaned out.
__________________

Ziggy953 is offline   Reply With Quote
Reply

Tags
flow, refugium

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
getting water to flow overflow box, sump, return pump ryshark General Hardware/Equipment Discussion 3 07-19-2008 11:28 AM
Refugium water flow w|z Saltwater Reef Aquaria 3 02-13-2005 05:44 PM
Calculation for flow loss (return 5' above sump) Nate C Saltwater Reef Aquaria 3 09-08-2004 07:45 PM
Calculation for flow loss (return 5' above sump) Nate C Saltwater Reef Aquaria 1 09-08-2004 06:23 PM
Flow through a refugium? pwilk20 Saltwater Reef Aquaria 4 01-20-2004 10:21 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 05:23 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.