CO2 injection method Poll - The Planted Tank Forum
View Poll Results: WHat method of CO2 injection/diffusin are you using?
Disc 14 24.14%
DIY reactor 29 50.00%
Mazzei 0 0%
Needle Wheel Powerhead 0 0%
Other (including comercial reactors) 15 25.86%
Voters: 58. You may not vote on this poll

 
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post #1 of 14 (permalink) Old 02-06-2008, 02:36 AM Thread Starter
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CO2 injection method Poll

What are you guys using, and what are your opinions? Also what size of tank are you using this on?

Thanks
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post #2 of 14 (permalink) Old 02-06-2008, 02:58 AM
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Other - Eheim canister filter as reactor.

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post #3 of 14 (permalink) Old 02-06-2008, 03:22 AM
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cheap glass diffuser

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post #4 of 14 (permalink) Old 02-06-2008, 03:35 AM
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Aqua medic 1000. It diffuses CO2 extremely well and doesn't clutter the tank as it is inline on my canister filter return. Watch yourr fish though, it's extremely efficient and will get the co2 through the roof in a hurry.
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post #5 of 14 (permalink) Old 02-06-2008, 06:54 AM
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I have a DIY PVC Reactor made mostly according to Rex's design. I made a few mods for my situation and I run it on a 30 gal with great results.
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post #6 of 14 (permalink) Old 02-06-2008, 07:52 AM
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I am currently using a nice glass diffuser but will be making a reactor to run inline with my eheim soon.

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post #7 of 14 (permalink) Old 02-06-2008, 08:23 AM
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I voted DIY reactor.

I am supposed to run my DIY rex grigg reactor. But I have no cylinder for the regulator, and the barbs on the reactor are too big for the canister filter hose. Out of money so just DIY CO2 + CO2 line into powerhead for now.

I say it is about 25% efficient, but gets at least some CO2 into the tank.
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post #8 of 14 (permalink) Old 02-06-2008, 03:20 PM
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I bubble CO2 into the return pumps from my sumps. I also use the Hagen ladders on a couple smaller tanks.

Sean

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post #9 of 14 (permalink) Old 02-06-2008, 03:33 PM
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I currently use 2 DIY reactors on my 125, but if I ever redo it, I would try a venturi.
In my upcoming 14 gallon (if it happens) I will be using a diffusor

Walter

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post #10 of 14 (permalink) Old 02-06-2008, 03:41 PM
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I have the CO2 bubble directly into the intake of my HOB filter, I'm sure it's not 100% efficient, but it seems to work okay.

I pulled some medical tubing from an IV out of the garbage can when the nurses weren't looking last time my wife was in the hospital. The OD is about 1/8", it's just the right size that I can fit it through the hole on the cover of my AC filter where the nub sticks out for adjusting the flow, I've rubberbanded the tube to the intake pipe so that bubbles get sucked into the impeller that way instead of going into the tank. I don't know if it's any better but at least this way I only hear small bubbles hitting the impeller, instead of hearing larger bubbles from 1/4" tube hit the intake strainer then the impeller. I kind of feel like more small bubbles going into the impeller is more efficient than fewer larger bubbles.
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post #11 of 14 (permalink) Old 02-06-2008, 05:19 PM
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I am also in the process of evaluating and setting up a Co2 system and not planning on DIY; so I was wondering if the trickling of Co2 into the external canister filter worked well and didn't cause other problems with the biological filteration? I'm trying to avoid unnecessary 'equipment' but also don't want to waste the introduction of Co2 into the tank or break the biological processes
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post #12 of 14 (permalink) Old 02-06-2008, 05:43 PM
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Using all diffusers at the moment, but plan to move to a reactor/diffuser combo (one method per side) on the 125 soon.

Filstar pimp #59 (shhhh on the Eheim)
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post #13 of 14 (permalink) Old 02-06-2008, 06:29 PM
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I use a DIY inline reactor like Rex's but instead of a tee at the bottom I used 2 street elbows to create a U.


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post #14 of 14 (permalink) Old 02-06-2008, 06:45 PM
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I have a diy reactor, influenced by what I read here, but of my own design (based on the parts I could find).

It is 1.5" PVC about 2' tall and powered by an XP3. There is an elbow at the top and bottom and a T just upwards of the middle where the CO2 comes in. I can run upwards of 2-3 bps and get saturation. Higher bps than 3-4 or so and the "beached whale", or I think that is what someone called it, is sloshing in the reactor and I have a CO2 headspace bubble at the top. I run at ~2 bps.

Anyone make a reactor and still use an airstone inside to increase saturation?

75g 3 T8s 2x OD, XP3, pres. CO2,
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