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Old 01-02-2007, 05:22 PM   #21
johannes
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flipper is a diffuser..

as u can see, as the bubble goes up higher, it gets smaller lo....meaning some of it has diffused into the water already....
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Old 01-02-2007, 05:40 PM   #22
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Quote:
Originally Posted by johannes View Post
flipper is a diffuser..

as u can see, as the bubble goes up higher, it gets smaller lo....meaning some of it has diffused into the water already....
OIC... than the problem is with my flipper, a cheapy one. The bubble does not go up one by one nicely, but gathers into one big blob before going up to the next level... I need to see a good one in action...
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Old 01-02-2007, 06:52 PM   #23
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Originally Posted by johannes View Post
flipper is a diffuser..
I hope Bybloz wasn't confused...

For simplicity's sake:

A flipper is the zigzag device that allows CO2 bubbles to spend maximum amount of time in the water and dissolve into the water.

A diffusor is typically a device with a white ceramic plate that breaks up CO2 bubbles that pass through the ceramic plate into many tiny bubbles so that dissolving into the water is done at a quicker rate (more surface area in tiny bubbles compared to 1 big bubble in the flipper).

A reactor is usually an internal or external cylindrical device that uses water flow from a auxiliary powerhead or external filter outlet flow to operate. CO2 bubbles are injected into the reactor and mashed/smashed/crashed with the water current to "force" CO2 into the water like a washing machine washes clothes.

Imho, amongst these three CO2 dissolution devices, the flipper is the worse, 2nd is the diffusor, and best of all is the reactor, although the diffusor is giving the reactor a run for its money.

People usually use a diffusor or a reactor. Good diffusors are characterised by how minute the bubbles that pass through the ceramic plate become.

If you use a diffusor, it's good to position the diffusor such that the output bubbles are in the path of a water flow, so that they at least meet with water current and dissolve better. Premium diffusors are made by ADA, but good ones can be found in LFSes easily enough. They require frequent cleaning with a light bleach solution, because algae tends to grow on the white ceramic plate and clog up the ceramic "pores" thus reducing efficiency.

If you use a reactor, it's best to have a auxiliary powerhead running it as compared to using a filter's output due to the latter having the tendency to slow down. However, using a auxiliary powerhead means another heat source in the water, which is bad in warm Singapore.

There are several DIY reactors out on the Internet, one of the notable internal ones by Tom Barr. It can be found in the articles section in the forums at http://www.barrreport.com/ . External reactors save space and can be hidden from view, but there is the possibility of a leak happening, as well as being difficult to clean because it's a sealed cylinder compared to a open cylinder in internal reactors.

No offence to johannes, to each his own (view/interpretation)!
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Old 01-02-2007, 07:36 PM   #24
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no worries...you explain better...

i should've said a form of a device that dissolves CO2 and not just to count bubble...
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Old 01-02-2007, 11:38 PM   #25
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Personally, i feel that the internal reactor will be a better choice to dissolve CO2 compared to using flipper or ceramic diffuser. You can see the difference if you have try out the 3 different ways.
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Old 02-02-2007, 02:45 AM   #26
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Personally, i feel that the internal reactor will be a better choice to dissolve CO2 compared to using flipper or ceramic diffuser. You can see the difference if you have try out the 3 different ways.
ya he are right
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Old 09-02-2007, 06:42 PM   #27
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Can the eheim oxygen diffuser be used for CO2 diffuser??

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Old 06-08-2007, 11:21 AM   #28
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Hi,

just got a Coil type ceramic diffuser and would like to ask if the diffuser is expected to be filled up with water eventually?
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Old 06-08-2007, 05:19 PM   #29
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The coil type is made of glass right.

Yes it's suppose to be filled up with water when used. It works much like the flipper. As the bubble of CO2 travels up the coil it'll get smaller as it slowly dissolved in the water it travels through.
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Old 06-08-2007, 05:23 PM   #30
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Quote:
Originally Posted by dragonfly_sg View Post
The coil type is made of glass right.

Yes it's suppose to be filled up with water when used. It works much like the flipper. As the bubble of CO2 travels up the coil it'll get smaller as it slowly dissolved in the water it travels through.
thanks, just got one Ocean free type from C328 last Friday but when setting up yesterday realised there is a hole in the coil and it's leaking, got to go back to exchane later
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