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Old 12-31-2004, 12:22 AM   #1 (permalink)
 
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Hey there,

I just bought an Eheim 2213. nice filter so far. I have one question regarding CO2 and this filter now. Is it possible to bubble CO2 into the tubing between the intake and the filter itself? this wouldn't be a diffuser (i'm hoping to make the filter do this), but simply letting the bubbles into the inflowing water. Is this ok? would it do any harm to the filter itself to have these bubbles of CO2 flowing into the filter? they should dissolve inside it, but am not sure if its "safe".

thanks

BEN
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Old 12-31-2004, 12:22 AM   #2 (permalink)
 
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Hey there,

I just bought an Eheim 2213. nice filter so far. I have one question regarding CO2 and this filter now. Is it possible to bubble CO2 into the tubing between the intake and the filter itself? this wouldn't be a diffuser (i'm hoping to make the filter do this), but simply letting the bubbles into the inflowing water. Is this ok? would it do any harm to the filter itself to have these bubbles of CO2 flowing into the filter? they should dissolve inside it, but am not sure if its "safe".

thanks

BEN
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Old 12-31-2004, 11:45 AM   #3 (permalink)
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You can do it that way but you can also damage your filter motor. I would have to reccomend using an in-line difusor if you want to play it safe, that way you get little to no bubbles in the filter itself. My filter will burp out some co2 on occasion but that is pretty rare. I went with an in-line because of some of the warnings I got about doing it the way you are asking.
I think you may find that it will work a little better then feeding CO2 into a powerhead and have the impailer bust up the bubbles.
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Old 12-31-2004, 12:27 PM   #4 (permalink)
 
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Eheims have a history of trouble with CO2 injection. The location of the pump makes it susceptible to getting a bubble caught in it and cavitating. The safest method is an in-line diffuser on the outlet of the filter.

OBTW, There is sure to be someone tell you they have done it and it's no problem.
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Old 12-31-2004, 01:58 PM   #5 (permalink)
 
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Hey Guys,

thanks. That's kind of what i suspected. I have a sort of in-line diffuser on the outlet, but there are still fairly large bubbles coming out of the spray bar.. will look around for something more effective. thanks again

BEN
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Old 12-31-2004, 03:17 PM   #6 (permalink)
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I have used a powerhead reactor like the ones sold by AquaBoutanic, and FlordiaDriftwood on a 55gal and 65 gal and I have to say it worked very well. I always had it by a filter intake and never had problems since the bubbles were so small. That would be an option if you can hide it behind a bunch of stem plants or something.
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Old 01-01-2005, 12:33 AM   #7 (permalink)
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There are quite a few nice diy walk-throughs on inline reactors on various websites. Personally, I use one of these: http://www.bigalsonline.com/catalog/...d1=3349;pcid2=

It says it's for tanks up to 500 gal, but I use it on a 75 gal. Many diy reactors are just as good or better, I just wasn't having much luck with them.
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Old 01-01-2005, 12:54 AM   #8 (permalink)
 
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Top of the mornin' to you. I use one as well and I think they're cheaper at AB, where I got mine. I have a question, do the inside balls ever need to be cleaned? I noticed a build-up of "stuff" but it still works great.
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Old 01-02-2005, 02:17 PM   #9 (permalink)
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I clean them out when I HAVE to, as in it's impeding the water flow or it's having an effect on the co2. I probably clean it out once for every two times I clean out the canisters. It's just too much of a pita to mess with it too often.
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