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

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 06-16-2009, 09:48 PM   #1
Aquarium Advice Apprentice
Join Date: Feb 2008
Location: Moscow, ID
Posts: 14
External vs Internal standpipe flow rate

I'm trying to decide whether or not I should use an external or internal Durso standpipe in my aquarium. The LFS recommends drilling the bottom of my tank (acrylic not tempered, so I'm safe) so that I get more flow than drilling the back of the tank, but once you add a standpipe, doesn't that become a mute point because the standpipe becomes the limiting factor no matter the placement? I can see if there's not a standpipe that there might be more flow.

Here's a drawing showing both placements:

p.s. Am I asking too hard of questions? My last posts have not received any responses.




ulfius is offline   Reply With Quote
Old 06-16-2009, 10:28 PM   #2
Aquarium Advice Addict
ezy33's Avatar
Join Date: Apr 2005
Location: San Francisco's Barbary Coast
Posts: 2,545
Send a message via ICQ to ezy33
This question rates a definite maybe! I think not having to deal with drilling your stand may be the deciding factor.

Not one shred of evidence supports the notion that life is serious.
ezy33 is offline   Reply With Quote
Old 06-17-2009, 08:26 PM   #3
AA Team Emeritus
jsoong's Avatar

Join Date: Aug 2003
Location: Edmonton, Canada
Posts: 4,222
From what I know of Physics, I would say the 2 are the same.

Flow through the pipes varies with the driving pressure, and that would be the difference in height between the tank water level & the sump water level. In both setups, the height is the same, so I expect similar flows. <With or without the Durso.>
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.
jsoong is offline   Reply With Quote
Old 06-17-2009, 08:33 PM   #4
Thanx but no.....

Join Date: Jun 2008
Posts: 2,333
Other than needing to make sure you have the room behind the tank I don't see any difference. You're drilling your tank one way or another.. either back or bottom. Although with the external you get one shot at it, you can't adjust height after the fact. Well you can but that would be messy
CaptainAhab is offline   Reply With Quote

external, flow, flow rate, tan

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
External vs internal filters Mark Hewitt Freshwater & Brackish - General Discussion 12 01-07-2010 06:14 AM
Flow rate Johno757 Saltwater & Reef - Getting Started 5 02-27-2008 12:14 AM
Internal or external pump pipermurphy General Hardware/Equipment Discussion 3 02-04-2007 12:20 PM
New Concept!! EXternal overflows that work like INTERNAL!! mrrrkva Saltwater Reef Aquaria 11 04-30-2004 12:01 PM
internal or external filters RobbyBoy General Hardware/Equipment Discussion 4 05-16-2003 09:08 PM

» Photo Contest Winners

All times are GMT -4. The time now is 01:25 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.