DIY Cerges - The Planted Tank Forum
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post #1 of 34 (permalink) Old 08-20-2014, 03:05 AM Thread Starter
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DIY Cerges

Well I made it official today, installed a new Eheim 2213 with a DIY water filter cerges reactor. Looking forward to consistent CO2, so far so good. Installed it after the filter as recommended by the experts.

Last edited by theknight; 08-20-2014 at 03:06 AM. Reason: Added placement
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post #2 of 34 (permalink) Old 08-20-2014, 03:43 AM
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It's always exciting when DYI projects work. I have the same filter but went with Rex Grigg type diffuser.
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post #3 of 34 (permalink) Old 08-20-2014, 10:54 AM Thread Starter
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It's always exciting when DYI projects work. I have the same filter but went with Rex Grigg type diffuser.
Thanks, it is a nice feeling when you can make the things you need or want.
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post #4 of 34 (permalink) Old 08-20-2014, 11:28 AM
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Rex Grigg reactor. Wow, I haven't heard that in years. Still cracks me up that people choose to say that rather than just PVC. LOL.

Cerges reactor is the best I have used when they don't leak. My leaked all over my floor last night. PITA


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post #5 of 34 (permalink) Old 08-20-2014, 12:18 PM
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That's awful.
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post #6 of 34 (permalink) Old 08-20-2014, 01:27 PM
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Cerges reactor is the best I have used when they don't leak. My leaked all over my floor last night. PITA
That sucks! How did it leak?


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post #7 of 34 (permalink) Old 08-20-2014, 01:49 PM
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That sucks! How did it leak?
Series of follies. The O-ring on the inside, the barb fitting on the intake moved a bit and lost seal and the quick connect o-ring on the inlet pipe rolled.

Seriously, it was raining tank water in my stand.

To be honest, only one that was out of my control was the o-ring seal of the actual housing. Not sure why it didn't seat right, but that was the real messy one.

I am looking to make improvements on this, even considering trying to make it a H.O.T. model. As much as multiple inline components is nice and all, maintenance is a freaking headache since you have to take it all apart to service it. So as I am getting older and lazier with some of this stuff, making them independent of each other is becoming more my pace and a reactor is just one of those things that is a PITA to clean when you need too.


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post #8 of 34 (permalink) Old 08-20-2014, 02:20 PM
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Cerges are the best. IMO they are just as much of a pain to maintain as EHEIM classic canisters. Makes it a lot easier if you installed ball valves on either side to connect/disconnect your lines.


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post #9 of 34 (permalink) Old 08-20-2014, 02:24 PM
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What kind of maintenance do you have to do on the Cerges? I am planning on making one and installing it this weekend.

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post #10 of 34 (permalink) Old 08-20-2014, 04:16 PM
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What kind of maintenance do you have to do on the Cerges? I am planning on making one and installing it this weekend.
Mine has been in for over a year, and I've never touched it. It's still crystal clear.


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post #11 of 34 (permalink) Old 08-20-2014, 05:47 PM
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What kind of maintenance do you have to do on the Cerges? I am planning on making one and installing it this weekend.

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Mine has been in for over a year, and I've never touched it. It's still crystal clear.
Yep, about a year I took it apart and cleaned it. I had a lot of red shrimp make their way through the filter and get lodged in there so it was time to get them out. I did have a little bit of filter media in there too, so just purged the mulm.

Nothing crazy, just a pain because it all had to come apart in order to do it.


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post #12 of 34 (permalink) Old 09-07-2014, 01:32 PM
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Cerges are the best. IMO they are just as much of a pain to maintain as EHEIM classic canisters. Makes it a lot easier if you installed ball valves on either side to connect/disconnect your lines.
I believe you meant to say unions or at the least true ball valve unions if your gluing it all together that is. Other wise your having to thread everything or use barbs and disconnect that way. That can get tedious and you might get inconsistent sealing issue happen every time you put it back together. I find unions the far superior and most time saving method of disconnect piping/tubing. My tank system is a bit more complex so ease of disconnecting parts is crucial for me. Just my .02 cents.

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post #13 of 34 (permalink) Old 09-10-2014, 06:17 PM
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Why do you feel a cerges reactor is better than a rex grigg style reactor? Other than possible space issues the rex grigg reactor is cheaper and for me works very well and I highly doubt I will ever have to do any maintenance on it? I also get zero bubbles or noise from mine.
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post #14 of 34 (permalink) Old 09-10-2014, 06:56 PM
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The Cerges style is better if you don't mind working, cleaning, and leaking. I have no problems with the Grigg's styles that I use. But then as in many things, a design comes out and works but people feel the need to "improve" it until it doesn't work!
I like the Grigg's design as it is simple and works. Don't stick other stuff in it and it won't need stuff cleaned out of it.
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post #15 of 34 (permalink) Old 09-10-2014, 10:37 PM
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I just built a cerges last night.
I'm using the co2 diffuser right under my maxijet to maximizes bubble shreddage.
I'm still getting some bubbles out of the output. My reactor is filled with marineland bioballs(3/4" size).


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