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View Full Version : Co2 Injection & Filstar XP3 (or 1 & 2?)



w9nwr
03-01-2005, 1:51 PM
Looking through numerous methods of CO2 injection I was wondering if anyone has given (or better yet tried) any thought to injection of CO2 at the Inlet Pipe Cap on a XP3??
My thoughts were that a spare Inlet Cap could be modified (drilled ) a line inserted from the CO2 generator of choice, and a bubble counter also inserted in the line. Check valve at appropriate spot also.

My reason for this question is that all commercial CO2 systems have a such a myrid of bells and whistles hanging all over the tank that there must be a better way.

The other thought that comes to mind, will the "bubble" upset the impeller operation making the unit produce noise. Maybe one could put the Inlet Pipe Cap on the output side of the XP3 and do the insertion process there thus circumventing the impeller problem.
Hmmm but then how do we get proper diffusion of the bubble?

Thoughts? Flames? Am I way off base? :idea2:

beviking
03-01-2005, 2:00 PM
Yes it can be done. I've done it on my XP3. The "problem" is that the bubbles collect inside the filter and periodically "burp" which if you ever had air in the filter you know makes a (to me at least) annoyingly loud swoosh noise. If you want to see how loud or annoying, just run the tubing down to the inlet in the tank so the bubbles get sucked into the filter. That will save you the hassle of modifying it if you don't like it. If you can deal with it, go for it.

I settled on this...
http://community.webshots.com/photo/66733948/209978429RguQNZ
The pumps can be had for ~$10 (US)