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Old 09-27-2009, 09:30 AM   #191 (permalink)
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Default Re: Tiny super efficient CO2 reactor

I've read "most" of this thread and very tempted to switch from my ceramic diffuser to this.

I have pressurized Co2 with a solenoid on a timer to go on with my lights. Would I need to setup this diffuser on the same timer or can I leave this on when the Co2 is off?

I didn't see any mention of this but it could have been in the pages I skipped. The thread is just too long to read it all. It's got me going .

Hey, thanks to TarantulaGuy for the pics.
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Old 09-28-2009, 09:02 AM   #192 (permalink)
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Default Re: Tiny super efficient CO2 reactor

You can leave it on when the CO2 is off. I do. You just get a little more water movement - that's good.



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Old 10-01-2009, 03:02 PM   #193 (permalink)
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Default Re: Tiny super efficient CO2 reactor

Well, I ordered 4 of them! They are on sale right now for $7.49 until 10/5 AND the shipping for multiples isn't much more than for just one. I am going to put one on each side of my 75 gallon with 4 2L CO2s and use the other two in my smaller tanks for better circulation. I'm so excited!!
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Old 10-01-2009, 03:09 PM   #194 (permalink)
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Default Re: Tiny super efficient CO2 reactor

Niko, I understand the filter is really small, what do you think of the idea of putting the whole airstone inside the filter where the sponge would be? Instead of having larger bubbles, you would have a fine stream of little tiny bubbles. I don't have the filters yet, but that's what I'm thinking about. Would it work do you think?
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Old 10-02-2009, 08:13 AM   #195 (permalink)
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Default Re: Tiny super efficient CO2 reactor

Hi, "Bunnie1978". That's the way myself and a few others are doing it, only we place the airstone inside the sponge.
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Old 10-02-2009, 08:16 AM   #196 (permalink)
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Default Re: Tiny super efficient CO2 reactor

Cool! I have a DIY set up - I'm going to have 4 bottles in a 75 gal. Do you think those filters have enough power to suction out of the airstone with yeast bottles?
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Old 10-02-2009, 08:28 AM   #197 (permalink)
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Default Re: Tiny super efficient CO2 reactor

I've had two of these on two different setups with the DIY Yeast method, using Hagen's "fine mist" airstones and never had any issues.
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Old 10-02-2009, 10:38 AM   #198 (permalink)
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Default Re: Tiny super efficient CO2 reactor

Ok let's take this thread further into the light.

Just putting the CO2-tubing in the pump without an airstone accomplishes 3 things:

1. The obvious - supplies CO2

2. The bubble counting.
If you listen carefully you can hear each bubble hitting the impeller. The sound is very gentle. You get used to it and tune "in" to it only when you want. I'm sitting here about 10 ft from my tank and I can hear the sound if I want. But don't think that the sound is loud. Even if you stand right in front of the tank you can't hear it unless you mean to. The sound is like a pinch of sand being gently dropped on paper.

If you diffuse the CO2 at the end of the tubing the "bubble counting feature" of this DIY diffuser of cosmic proportions will disappear. You will not get any better efficiency out of it with an air stone. The magic is in the sponge being over the pump outflow. The CO2 gets trapped there and only the tiniest bubbles escape (if any).

3. The power failure protection
Yes, this legendary design has a built-in power failure protection too. It will not allow the CO2 to be difused if the pump is not working. If the pump is not working there could be a power failure and there is no water movement. If you continue to disolve the CO2 as usual say good bye to your fish.

Without an air stone if the pump stops working the CO2 bubbles come out of the end of the tubing and do not get chopped up by the impeller. They find their way out of the pump and float to the surface. No solubilization takes place. Your fish are safe.

By the way one of these pumps is enough for a 75 gal. tank. That's with pressurized CO2. Old Skool DIY CO2 brewers should not feel a need for a second pump. But hey! It's so cool!

75g. tank with only 1 (one) "tiny-super-efficient-imperial-panda-supper buffet-looka lahka man" reactor:
http://picasaweb.google.com/ddasega/DaveS#

I'm now working on this same design but made of pure gold. Exquisite item for your aquascape. Only for the true connosieur.

--Nikolay
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Old 10-02-2009, 12:11 PM   #199 (permalink)
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Default Re: Tiny super efficient CO2 reactor

You put alot of emphasis on bubble counting. Is that really that important? Shouldn't I have as much CO2 as I can get while still maintaining an appropriate PH level?
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Old 10-02-2009, 04:21 PM   #200 (permalink)
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Default Re: Tiny super efficient CO2 reactor

Hi, Nico. You've made some very good points here.
Quote:
If you diffuse the CO2 at the end of the tubing the "bubble counting feature" of this DIY diffuser of cosmic proportions will disappear. You will not get any better efficiency out of it with an air stone.
In my experience, having experimented with both methods in two almost identical tanks with PH controllers on both, I found that with diffusing through airstone into sponge and dispersing throughout the tank I reached that sweet spot allot quicker than with the other. Whether the one is more efficient than the other is debatable as there are too many contributing attributes in differing setups. Ideally you should experiment with what works best for you in your setup, but regardless, I think one thing we can all agree on is that this is one tiny super efficient CO2 reactor.
Quote:
The power failure protection Yes, this legendary design has a built-in power failure protection too. It will not allow the CO2 to be difused if the pump is not working. If the pump is not working there could be a power failure and there is no water movement. If you continue to disolve the CO2 as usual say good bye to your fish. Without an air stone if the pump stops working the CO2 bubbles come out of the end of the tubing and do not get chopped up by the impeller. They find their way out of the pump and float to the surface. No solubilization takes place. Your fish are safe.
This is a very good point and one that would not even have crossed my mind, mainly because I have backup power and is thus of no concern to me really. Also it only really apply to the DIY yeast method as with a pressurized system your solenoid valve would shut off with the power, assuming you are using a solenoid valve and have no backup power source.
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