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Re: [APD] Another CO2 reactor question -- or - Whence the gas, Eheim?
Thanks Scott..... but unfortunately the reactor is filling with gas :-(
after leaving it on for most of the day, the water level is only about half
high (from bottom to top) in the reactor... the rest is gas on top. I can
still see the water trickling into the top reactor, since the gas allows me
to have a better view of the water flow.... I'm guessing that accumulated
gas is primarily CO2, with some air mixed coming in from the intake of the
I will grease the o-ring and see what that does... and I had cleaned out all
the media just yeatrday, when this happened and I had to prime the dang
thing anyway. I am getting pearling , ph about 6.5, KH - 3-5 range.... but
my tap water is 6.9 and loaded with CO2 so I'm not sure (with this being a
new tank setup, if that accurate by the CO2/KH charts)
----- Original Message -----
From: "S. Hieber" <shieber at yahoo_com>
To: "Gilly Munavalli" <gmunava at yahoo_com>; "aquatic plants digest"
<aquatic-plants at actwin_com>
Sent: Sunday, March 28, 2004 7:41 PM
Subject: Re: [APD] Another CO2 reactor question -- or - Whence the gas,
> Good question.
> If the CO2 reactor set up is getting your CO2 levels where
> you wan't them and the reactor is not filling with gas,
> then there is nothing more to expect from or blame on the
> The gas in the 2215 is very unlikely to be the result of
> any direct interaction between the reactor and the filter.
> Even if your plants are pearling like Lawrence Welk's
> orchestra during a double-time polka (you young 'uns can
> look that one up) it shouldn't cause any gas significant
> build up in the Ehiem canister.
> The things that most often cause gas to accumulate in an
> Eheim are:
> an increasing build up of material in the media, which
> slows down the water float, resulting in a reduction in
> pressure in canister, a reduction in vapor pressure. Ehiems
> suck water from the canister and when the pump can't slake
> it's thirst, gas that is dissolved in the water in the
> canister bubbles out. If it gets bad enough, air can
> sometimes get sucked in around the "o-ring" that seals the
> motor housing to the canisiter.
> an imperfect seal between the canister and the motor/pump
> housing. To avoid this, apply a think coat of petroleum
> jelly to the o-ring.
> Soctt H.
> --- Gilly Munavalli <gmunava at yahoo_com> wrote:
> > Hi All
> > Thought I'd post this question, after searching the
> > archives to see if
> > anyone has a similar setup with similar problems
> > I recently got a 2nd hand Aquamedic 1000 CO2 reactor
> > (like new) and hooked
> > it up over the weekend to my 75G plant tank. The output
> > of my Ehem 2215
> > cannister goes into the reactor at the top, exits at the
> > bottom and then out
> > to the tank via a spraybar at the tank bottom. CO2 comes
> > into the reactor
> > at the top after passing a soleniod, check valve, and an
> > aquamedics bubble
> > counter. There is a controller in the system as
> > well...to handle the
> > soleniod (of course)
> > With the rate of CO2 at about 18-20 bubbles per minute, I
> > noticed that at
> > the end of the day, the 2215 canister filter is sounding
> > like it has air
> > inside (noisy turbulence of the propeller) and I can't
> > figure out where the
> > air is coming from. I dont think it was from the
> > cannister intake because
> > that end has been submerged in the tank
> > I used the release valve on top of the Aquamedic 1000 to
> > release some air,
> > because the reactor was only half filled with water when
> > I looked at it at
> > the end of the day, with the top half being filled with
> > air! I figured
> > maybe the co2 rate was too high?!
> > A couple questions to add to this:
> > Is the 2215 enough output for this reactor (the manual
> > says 250 gal/hour)
> > and I dont think (not sure) my cannister is capable of
> > this, or does it
> > matter?
> > Has anyone had any similar problems with their reactor
> > and cannister
> > systems, esp those with the Aquamedic 1000 reactor and or
> > eheim 2215
> > Is it possible the air from the reactor to get up in the
> > intake and back
> > into the cannister while there is still flow going on?
> > I'm hoping some engineer types or anyone with experience
> > can help a
> > semi-newbie outout.
> > Thanks in advance!!!.
> > GM
> > _______________________________________________
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> S. Hieber
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