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[APD] Re:The most simple C02 reactor yet!
Date: Thu, 24 Feb 2005 02:35:57 -0500
From: Chris Hotte <ecwh at cogeco_ca>
Subject: [APD] The most simple C02 reactor yet!
To: aquatic plants digest <aquatic-plants at actwin_com>
Simplest reactor yet.
I was using a powerhead, as you might have seen me post earlier this
week. I was using around around a bubble every 3 seconds or so. I was
reading online about diffusors and reactors and came across one post on
the Krib. See:
Power CO2 reactor (DIY)
by "G. G. Rajendra Kumar" <ggrk/blr.vsnl.net.in>
Date: Mon, 23 Mar 1998
I thought, why use a powerhead at all? I already have a spraybar coming
off the Eheim, so why not just cap the end and tap into it. So I did
just that. I found a 5ml test tube cap and it fits perfectly on the end
of the spraybar. The Eheim originally came with one, but I or my cat
misplaced it long ago. Opposite to the holes running along the bar
(bottom) I drilled a hole (top) and pushed in the C02 airline directly.
It took took maybe 10 minutes to complete and that included locating a
suitable spraybar end cap and a drill bit.
It's extremely efficent and I'm going to have to build a bubble counter.
The C02 stretches along the top of the bar and burps every now and again
but I'm trying cut it back. Again, I need a better needle valve for
control. In the 20 minutes I was playing with adjustment, pH dropped
0.1. If I'm not mistaken, that's a fairly high infusion rate for a
I need to build an inline counter pronto. I've seen online directions
before, but misplaced them. Links anyone?
If you want an even simpler reactor and one that is probably even more
efficient that the one you describe, wedge the CO2 line into the intake
strainer of the Eheim you are using and you are done. Eheim cannisters are
some of the best reacotors you can use. They don't airlock, no maintenance
like an independent CO2 reactor needs, no powerheads to burn out and
replace, and one less ugly piece of equipment in your tank. I've been doing
this for years.
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