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Old 09-14-2006, 06:59 AM   #1 (permalink)
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Default CO2 cylinders

Could anybody please tell me what kind of CO2 cylinders are optimal for the aquarium use.
Does it have to be aquatic one or can you also use cylinders, which are used in brewery, welding? Can you not simply use a fire extinguisher cylinder?

Thank you for your help.

I just bought pressure regulator- tired of DIY-ing CO2 issues... Canít wait to set it all up.

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Old 09-14-2006, 11:34 AM   #2 (permalink)
 
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I got my CO2 cylinder from a welding company not too far from where I live, you can also get them at brewerys, however, I'm not too sure about a fire extinguisher, hopefully someone else can jump in and answer that one for you.

I've also heard that you cannot use paintball cylinders on freshwater tanks but I'm not too sure about that one.

Good luck, you're really going to enjoy pressurized CO2, there's such a huge difference from DIY CO2.
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Old 09-14-2006, 11:46 AM   #3 (permalink)
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Pressurized will probably be the best investment you'll make for your aquarium. Between dead yeast and sugar getting all over the kitchen, and my room smelling like bear, I don't know how anyone could do DIY CO2 for too long.

As for CO2 tanks, I got mine at a place listed as a 'natural gasses' place. I know welding shops sometimes have them, and brewing places sometimes have them, and even hydroponics places sometimes have them. Get a telephone book and call around. I have a 5# one which is plenty big for my 29 gallon for awhile. Some people get 10# so it lasts longer, and some even get the mamoth 20# cylinders. Determine how much it costs for each size, and how much a fill up is on each size, and you can figure out what size you need and how much it'll cost.

I know some people got tanks at fire extinguisher stores, but I'm not quite too sure what to look for or what you'd need in that department. I'm sure someone with experience there will be able to offer a bit more widom on fire extinguisher CO2 tanks
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Old 09-14-2006, 01:30 PM   #4 (permalink)
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Thank you LindaC, thank you Pyro,

I have been looking at English forum about this subject and it seems that people in UK do use CO2 fire extinguishers for their CO2 systems. You can certainly find absolute bargains on eBay on some of them. Sometimes they are given away for practically no money at all. All you apparently have to do is take off the horn of the extinguisher and attach the pressure regulator.

Take a look at this thread in UK based Aqua Essentials forum:

Aqua Essentials ~ View topic - CO2 tanks

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Old 09-14-2006, 10:02 PM   #5 (permalink)
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Fire exting. stores have worked great for me for being able to pick up inexpensive, used CO2 tanks and a good bargain for re-fills. Enjoy.
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Old 09-14-2006, 11:05 PM   #6 (permalink)
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sorry for the hijack but does anyone know if a nitrous bottle will work?

its rated for the high pressure and all and still certified. my go fast days are over but i still have a tank sitting there just collecting dust so i though that maybe they can refill it with co2, its a 10# bottle
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Old 09-15-2006, 05:02 AM   #7 (permalink)
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I used to take my cylinder in to an industrial gas supplier, but had to get it hydro-tested this time around. They recommended a fire extinguisher/safety store, who also charged less for the refill. The funny part is, they probably get the CO2 from the gas place.
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Old 09-15-2006, 09:02 AM   #8 (permalink)
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Thanks for all the feedback

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Old 09-15-2006, 06:29 PM   #9 (permalink)
 
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Quote:
Originally Posted by eklikewhoa
sorry for the hijack but does anyone know if a nitrous bottle will work?

its rated for the high pressure and all and still certified. my go fast days are over but i still have a tank sitting there just collecting dust so i though that maybe they can refill it with co2, its a 10# bottle

You will have to have the valve changed. The cylinder is pretty generic. But the valves are not.
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Old 09-15-2006, 07:42 PM   #10 (permalink)
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Quote:
Originally Posted by Rex Grigg
You will have to have the valve changed. The cylinder is pretty generic. But the valves are not.

thanks!
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