Tubing, Barbs & Restricting Flow - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 08-30-2006, 12:19 AM Thread Starter
Algae Grower
Join Date: Apr 2005
Location: Norway
Posts: 17
Tubing, Barbs & Restricting Flow

I'm setting up a new tank using an Eheim 2217 with it's 5/8" tubing on the intake and 1/2" to the spray bar. I'm building an external CO2 reactor with bio balls that feeds from the intake (on the 5/8" tubing) into the cannister. I realize this may be heretical to some but it's the set-up recommended by the designer and worked well on an earlier set-up with an Eheim 2213 with it's 1/2" tubing and 1/2" I.D. barbs screwed into the external reactor.

It's hard to find 5/8" barbs ("male adaptor" in the catalog) so I ordered two on line but discovered when I got them that the 5/8" was for the external diameter of the tubing and the internal diameter was 1/2". Will the 1/2" I.D. of the barbs really make a difference in the cannister's flow rate and, if so, is there a solution that I should follow? The new tank will be a 75 gallon and the filter is rated for a larger tank, but I'm concerned that between the restricting barbs and the bio balls (5) that the flow will be greatly reduced. I guess I'm wondering whether it will make a difference to be concerned about.
Peter is offline  

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome