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Old 07-30-2006, 04:17 PM   #1 (permalink)
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Can you guys show a link to a nice CO2 Bell?
The link to the Glass Difussers is great. Good price too.

I think a Glass Diffuser with a CO2 Bell somewhere above it would look really cool!
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Old 08-02-2006, 02:27 AM   #2 (permalink)
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Hi john, how long the DIY mixture will last on the Nutrafin canister?
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Old 08-02-2006, 11:56 AM   #3 (permalink)
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For me using the above recipe in the nutrafin canister, it lasted for about 2-3 weeks. It probably could go longer, but I like to have it going at the peak performance.

Using a Juice or 2L bottle, the reaction and bubble count was longer at about 3-4 weeks.

-John N.
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Old 08-15-2006, 04:10 AM   #4 (permalink)
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Strange I was expecting at least one person to mention using High Tolerance Champagne or Wine yeast as it can tolerate almost 3 times the Alchohol % of bread and beer yeast, aslo using sucrose instead of sugar, and adding the sugar in incremants per week and not a huge dose up front allows the brew to ferment at a more consistant rate, also have two of these bottles running so that as one finished the next one has finished its really busy inital phase and has settled down so the tank has a nice consistant suppy of CO2
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Old 08-16-2006, 10:49 AM   #5 (permalink)
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I have a question about bottle size...from what I've read using a 2L bottle vs. a nutrafin canister will last longer due to the decreased alcohol concentration levels. My question is about the peformance of the 2L vs. the Nutrafin canister. Basically, which will produce the greatest amout of CO2 a day? My current mix in the Nutrafin canister is lasting right at two weeks, so if the 2L will produce CO2 at the same rate, and last longer, I'd like to switch. However, since I'm running the system on a 29G I want to have the highest possible rate of CO2 production, even if that means starting a new batch every two weeks vs. every 3 or 4. Thanks for the advice!
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Old 08-02-2006, 12:00 PM   #6 (permalink)
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Jimbo for the CO2 bell, it really can be anything that can create a dome where CO2 can fill in. Commonly used items would probably be small bottle soda tops adhered to a weight, glass sauce dishes, etc.

-John N.
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Old 08-03-2006, 08:59 AM   #7 (permalink)
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Yeah, I am tried those for a day. Ended up putting the Nutrafin Ladder back in for now. I do notice the size of the bubbles do get smaller before they finally escape from the top. Boy, watching your whole tank pearling is a trip!
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Old 08-04-2006, 11:15 AM   #8 (permalink)
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Found the checkvalve in the Local Fish Store. $2.00
From the otherwise very good directions, I thought I had to create that also. This should be easy now!
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Old 08-10-2006, 08:36 PM   #9 (permalink)
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Hello,

I'm new, forgive me if this is a ridiculous question

I have a sand substrate, would it work to stick the tube under the sand to diffuse the bubbles?
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Old 08-10-2006, 09:51 PM   #10 (permalink)
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Quote:
Originally Posted by harbisgirl
Hello,

I'm new, forgive me if this is a ridiculous question

I have a sand substrate, would it work to stick the tube under the sand to diffuse the bubbles?
Interesting idea, but probably no, since a large bubble will still come out of the sand and rush to the surface. The key for getting CO2 in your tank's water is to have the CO2 gas bubble in maximum contact with the water so that it can dissolve. For example, the hagen ladder does this very well. The bubble travels up the ladder getting smaller as it goes up. Similar to this type of glass diffuser that New Guy has. See the cool video in post #10 of

Other options is to have the impeller of your filter or powerhead chop up the bubbles. So feeding the line directing into the intake of your filter wlll maximize the surface area of the tiny bubbles that get chopped up, and provide better chance of dissolution.

-John N.
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