Cerges' Reactor - DIY Inline CO2 Reactor - Page 11
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Old 07-08-2011, 11:27 PM   #151
Dave-H
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What was that part about the Cerges being easier than the rg reactor?
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Old 07-08-2011, 11:50 PM   #152
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No gluing so it can easily be disassembled and more compact size is a win for Cerges' Reactor YMMV.

I believe the Rex Grigg reactor was invented by someone else.
http://www.plantedtank.net/forums/1219452-post44.html
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Old 07-09-2011, 12:39 AM   #153
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I guess, but I sort of like how the rg reactor is permanently sealed and really doesn't require maintenance.

My dad is an retired physicist and I showed him the rg reactor design. He said that there was lots of different types of 'bubble column reactors' used in labs for many years, so I bet it goes back a long, long, way. I will hand it to Rex Griggs for popularizing it and making it easy to do - he's the Steve Jobs of the aquarium world. Didn't invent anything, but brought a good design to market!
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Old 07-09-2011, 02:22 PM   #154
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My elbows are like this but made of that black plastic in the irrigation section of home depot. I use them on my Rex grigg.

Like I said, mine is the black plastic ones you use with Rex grigg reactors or such. Is that all I need cause I have those. Just screw one in on each side of the house filter, drill in my co2 line, then the internal pipe pieces? Correct me if I'm wrong. Please help. Will that pretty much work. I know I'm using less pieces than the initial DIY post so I don't know if that matters. I'm using a magnum 350 canister for my extra canister used for my xo2 reactor.
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Old 07-10-2011, 02:05 AM   #155
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If all I need is the CPVC pipe down the center of the housing and those two plastic elbows I already have, I'll bite the bullet and purchase the whole house filter from culligan
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Old 07-10-2011, 01:56 PM   #156
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Yes, the only real add on part that you need is the center PVC pipe. Just drill the holes around the base of it. I actually also use an O-ring at the top to seal it off when you close it. This removes and flaw if you don't cut it to fit exactly and doesn't allow any flow to sneak out.
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Old 07-10-2011, 02:09 PM   #157
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OK so that's how you got the slightly smaller diameter PVC pipe to seal against the inside top?
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Old 07-10-2011, 02:17 PM   #158
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Well, actually the diameter is a bit larger, but yes. The o-ring just gives it something to compress it into position as well as seal it. Next time you service yours, take a look at the inside. I just simply rolled it on to the base.

When I first installed mine, I didn't use this O-ring and not going to lie, the gurgling was absolutely frustrating and annoying and all these bubbles kept coming out of my spray bar. I finally figured out what it was, the water short-circuiting and not dissolving all the gas and it was all sneaking out the riser. Now, I would almost say its 100% dissolved inside the reactor.
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Old 07-10-2011, 03:39 PM   #159
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Thanx it's working great. 100% efficiency for my present modest 1bps DIY CO2. None of that 'white fuzz' or 'chirping' nonsense of the typical in tank diffuser. Beats the heck out of my chopstick diffuser.

BTW those thread leaks stopped after a few days as the high TDS of my aquarium water have temporarily sealed them LOL. Once I get my Magnum quick disconnect in the mail and splice it in the canister to reactor loop, I'll redo the fittings.
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Old 07-11-2011, 02:36 AM   #160
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Hmm, what kind of O ring? Like where to a get it and can you show a pic of how it goes on? I'm still a little lost on that part.
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Old 07-11-2011, 03:16 AM   #161
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I believe it's on the outside of the top of the pipe and that slides inside the socket at the top inside of the housing.
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Old 07-11-2011, 05:48 AM   #162
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I think this works too good. My drop checker is yellow, with my needle valve set at 1bps. How do I set my regulator/needle valve correctly? If I lessen the bps, water creeps up my co2 tubing. My regulator was set at 15psi and I bumped it up to 25psi, hoping to decrease my needle valve, but I don't know if that is suppose to be the correct move to make. Im new to pressurized co2.

I also don't know how to make the bubble sounds inside the reactor stop. I shut off my co2 so I dont know how an O-ring would help in my case since there aren't any gas bubbles entering the system. I also turned the reactor upside down, and I still get bubbles exiting the reactor. I have no leaks and the reactor has been running for 2 hours.

I love the simple design...I just think it works too well for my 20 gallon
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Old 07-11-2011, 01:58 PM   #163
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What's the benefit of the drilled holes on the bottom? Do you mean don't leave the little clearance space at the bottom but drill holes instead? Or do both?
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Old 07-11-2011, 02:20 PM   #164
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Quote:
Originally Posted by PRSRocker3390 View Post
What's the benefit of the drilled holes on the bottom? Do you mean don't leave the little clearance space at the bottom but drill holes instead? Or do both?
Wait, let me make sure we are talking about the same thing here.

If you install the PVC riser inside the chamber, you can actually glue it to the top piece. If you do this, you don't need the O-ring and you can certainly cut the piece shorter so it doesn't go all the way to the bottom. By doing this, you don't need the holes.

The one I typically make extends all the way from the top to the bottom (sitting in the grooved recesses) and I leave it loose (no glue). I use the O-ring at the top to make up for any gaps left after the cut and to press the riser into place. The diameter of the PVC is not an exact match to the recesses nipple for it to stay in place, so this is my fix for that. I am sure there are many other ways to do it, this was just the cheapest for me (O-ring is pennies).

I drill the holes in the riser tube at the bottom to act as the intakes. You could easily cut notches as well. Its all the same at the end.
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Old 07-11-2011, 02:30 PM   #165
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Do you have any pics of your reactor that I can see? Cause I didn't know the was a way that glued in anyhow. I thought I would just buy the straight cpvc pipe, a coupler, then just shove the coupler on as far as possible, than insert the correct length of the straight PVC pipe to get it just a bit off from the bottom of the house filter housing. Is that what you mean by using a riser? I'm not familiar with that term, I'm still a novice with my DIY projects. And then an o ring at the top where the coupler meets the house filter top?
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