How long will a 5lb co2 tank last

Physics says you're wrong. CO2 liquefies at 870psi at room temp that pressure doesn't change. Even paintball tanks are filled with liquid CO2. All CO2 tanks hold liquid CO2, fill stations just have a siphon tube so it fills with liquid instead of the gas coming from the regulator.

I know that this is a very open-ended question... but..., assuming that you're using roughly 3-4 bps (which Im guessing is "normal-high") and you have proper lighting …Mar 25, 2014 ... ... tank will tell you the weight of your cylinder empty (mine is 25.0 lbs). Then I just have to weigh the tank on a scale and subtract this ...A 5lb CO2 tank can last around 6-8 half-barrel kegs or 10-12 corny kegs, depending on factors like dispensing pressure and temperature. Keep an eye on the pressure gauge to monitor usage. Estimating CO2 Usage in a Kegerator. Estimating CO2 usage in a kegerator can help you get an idea of how long a 5lb CO2 tank will last in …so obviously i have a leak. this is my first keg. When i got the 5lb co2 tank home, i hooked up the regulator. On the gauge that measures the amount of co2 in the tank, it measured just above the big red area. thought that was weird but i continued anyways. I hooked up the keg to 20psi...I'm completely new at this, so please bear with me. I have a 5lb Co2 cylinder on order, but I have a few questions. ... 1. How long does a 5lb tank last for a 29 gal.? 2. Which regulator is the best, Milwaukee, or JBJ? 3. When should I refill the tank (Psi)? Thanks in advance. Lissette . R. reiverix Aye. Sep 4, 2004 1,470 0 0 55 Columbus, OH ...Open your 15 pound tank, this lasts for about 30 seconds. Your 20 pound tank is going to last for about 40 seconds, 20 pound is very common with special effects. Co2 special effects and Co2 stage effects. These 20 pound, 35 pound, 50, 75 100 is what they normally use on stage effects.

Looked this up from the internet: A pound of liquid CO2 in a tank contains 8.741 cubic feet of gas, so a 20lb. cylinder would hold 175 cubic feet CO2, and a 5lb. cylinder would hold approximately 44 cubic feet CO2 5 gallons is actually only about 2/3 (.67) cubic feet. It's hard to believe but true.It should be around 600-850 or so, but it's all temperature dependent. Maybe it's just me but in my kegerator my co2 will read normally for a long time and just kinda bottom out quickly. It's less of a fuel gauge and more like a theres something there in there gauge. My freshly swapped tank shows 700, but it seems a bit on the low side.The answer to the question is about (8) 1/2 barrels out of a 5lb co2 tank, based on a proper fill, and assuming no leaks in the system. The rule of thumb is .6lbs of co2 per half barrel. If you have an accurate scale at home, you can tell if you're getting a proper fill by weighing the tank.It doesn't sound like your use case is similar (I swear I'm including it for nonmasturbatory reasons), but your 2L/day would last 70 days. Consider this an extreme worst-case scenario, as assuming equivalent proportions of trapped or wasted gas between SS tanks and a 5#, your new setup should yield (80/14.5)*60 = 330L or 165 days.I've been using a 5lb CO2 tank with my drinkmate for a few months now, I've probably gone through 10 or so tanks with no issues. I just switched over from my brewery (which closed) to an Airgas for the Co2 exchanges and noted on my first tank that my Drinkmate now just releases CO2 as soon as I open the tank and not when I press the Drinkmate button and the only way to stop it is to shut off ...Stainless Steel 5 lb Co2 Carbon Dioxide Tank 10 lb Dry Fire Extinguisher Vehicle Mount Bracket 5" to 5.25" Diameter Cylinders $69.95 $ 69 . 95 FREE delivery Jan 25 - 29The most common co2 tanks used for home beer dispensing are 1 lb co2 tanks and 5 lb co2 tanks. It's important to realize that co2 tank sizes and co2 cylinder volumes are not the same things, though co2 gas is calculated in pounds. A 5 lb co2 tank has a volume equivalent of 300 liters of co2. Which means it can be used for dispensing at least 3 ...Heres a chart to help answer the question on How long do Co2 Tanks last. CO2 tank weight in pounds Composition Usage limit 50 Aluminum 1.25 minutes 50 (short) Steel 1.25 minutes 50 (Short) Steel 1.25 minutes 50 Aluminum 1.25 minutes. ... Rules of Thumb for CO2 For an average 5 lb CO2 tank and a 5-gallon keg, that means the tank will pump 31 to ...

Frequently Bought Together. Total Price: $288.77 $390.66. Add to Cart. This item: 5 lb New Aluminum CO2 Tank Cylinder with CGA320 Valve. $79.99 $116.33. Rebuild Kit For Corny Kegs - Includes All Gaskets & O-Rings (Dip tube gaskets, Body connect gaskets, Lid O-ring) $3.99 $9.90.Jan 9, 2008 · I'm not saying it's bad to run CO2 24/7, a lot of people with great tanks do it, but it uses CO2 a lot faster. Eheim Pimp #254, Eheim Wolverine #1 55 Gallon Work in progress I'm interested in doing this with sodamod tanks. Refill. I purchased a 10 pound CO2 tank with a siphon tube (you need the siphon tube to transfer liquid CO2 at the bottom of the tank instead of gas CO2 at the top of the tank). The fire extinguisher place I take my tanks to for filling charges $14 for a 5 pound tank and $17 for a 10 pound tank.the real danger comes from a valve stem getting knocked off or broken. The reason why it is safer to transport vertically is that under pressure, CO2 is a liquid and inside the tank at the top near the valve stem a "cushion" or buffer zone of warmer gas rests between the liquid CO2 and the valve. constant contact between the supercooled liquid ...

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A rough estimate to start from would be, for every half pound of CO2, you can dispense a will dispense a full size (1/2BBL / 15.5G) keg. Which would also equate to about 3 - 5 Gallon kegs. If you are force carbonating you would use about double the amount of CO2 to force carbonate and then dispense the keg – 1 pound of CO2 to force carbonate ...Jul 20, 2019 · How long should a 5lbs CO2 cylindzslr last in a 55g tank? IME, you should be able to get 3 months from a 5lb tank on a 55 pretty easily. I'm on month 3 of a 5lb tank on a 75. I anticipate getting at least another month and I'm at about 5 bps (although bps is by no means a standardized measurement). Oct 23, 2022 ... ... 5lb tank holds 2268g of CO2, divide by 16g…. So the 5lb tank will do 141.75 bottles. At 1 per day average, that should last around 4.75 ...I was wondering what other people do for choosing the size of the CO2 tank to use. I have a 75 gallon tank, and starting to use CO2 shortly and need to source a tank. My stand will accommodate a 5 lb or a 10 lb tank, but not a 20 lb tank. Since most of the tank exchange places in my area (Westchester, NY), exchange only 5 lb or 20 lb, I was ..."Ok, that makes sense, is your 100 lb tank's output on the bottom, so that it is filling liquid" "No, it doesnt need to be. CO2 is CO2." I tried to explain to him that if you are only pressing gas into the the smaller tank, CO2 will stop when the pressure equalizes, not guaranteeing that the 5 lb tank will be full.

5lb will last 6-7months on for about 6-10hours a day at 2-3bps. on a 29gal. I moved up to a 75gal and added a pH controller and it last 6months tops now. And it cost the same to fill up a 5lb-20lb tank so buy as big as you can. Like.A 5-lb CO2 tank will last between 6-8 half barrel, or full kegs, before it will need to be filled. A 10-lb CO2 tank will dispense between 10-13 full kegsA 20lb propane tank contains 430,000 BTU. To determine how long it will last on a firepit, you divide the figure by your fire pit’s BTU rating. For instance, the Endless summer firepit would last for; 430,000/50,000-=8.6 hours with the 20ln propane tank. You can get more usage time from your 20lb tank by reducing or keeping the flame low this ...10 pounds of CO2 lasts me forever, like 15 batches of beer. If you are purging your keg a lot, you may go through it quicker. Recently I submerged my tank with regulator and gas lines attached into water in my bathtub and found the leak. I made sure to leave regulator dials above the water though.Specific Aspects of a Planted Tank. ... 5Lb Co2 for two 20 Gallon tanks. Jump to Latest Follow ... 4 participants last post by xmas_one Feb 27, 2013. O. owens81jw ... I got a 5lb CO2 tank to replace my old propane-burning system because that apparently generates CO and other pollutants, which can harm both you and your plants. But it kind of went fast as hell. The 5lb tank costs $28 to refill and was gone in about a week. My 10 lb tank has been going for a year now with no refills. Off at night, on for 8 hours at 3-4 bps. I imagine you should be able to get at least 6 months out of your 5 lb.I fill from a 50 to 5's often and as the bigger tank empties you will notice the 5# getting filled less and less like this: 4.8, 4.7, 4.6.... Get a high pressure hose rated 2500plus PSI to err on the high side and have a shop crimp in 1/4" females on both ends. Teflon tape a cga 320 stem RH and nut on both sides.CO2 intermolecular forces are sources of attraction between atoms of carbon and oxygen that cause them to join and form carbon dioxide. The action of intermolecular forces must be ...

CO2 refills for what ever you need filled. I fill all sodastream, paintball, kegerator, small tanks: 2.5 lb tank - $25 5 lb tank - $30 10 lb tank - $40 20 lb tank - $60 I am close to Londonderry Mall. $180.00. ... Complete co2 setup for planted fish tank. 5lb co2 tank was recertified last year. $600.00. C02 set up. McLeod.

My 5lb co2 tank lasts about 4-5 months at about 4-5 bubbles per second so that will give you a rough idea. I figure a 20lb tank would last around 16 months at that bubble rate. Less if you have a higher bubble per second. Again just a rough estimate. You should get at least a year between refills I would think. Maybe less thats a big aquarium.A 5lb CO2 tank will carbonate and dispense approximately 30 gallons of beer (around 6 x 5 gallon Corny Kegs). If you're dispensing already carbonated commercial beer, a 5lb CO2 tank will last longer than this. It's recommended that you check all connections for leaks using a sponge with soapy water when installing a new CO2 tank.FAQs: How Long Does a CO2 Tank Last in a Grow Room? 1. How long does a CO2 tank last in a grow room? The duration of a CO2 tank in a grow room is based on the size of the tank and the size of the grow room. A small CO2 tank can last for around 2-3 weeks in a smaller grow room, but a larger tank can last up to 3 months. 2.I vote 2 5's over a 10 as well. I would also look into where you plan on having your refills done. The beverage center closest to me will only do their exchange program with 5 gallon tanks. I like the 10 gallon tank I have much better than the 5 (it seems to last a lot longer). A 2LB paintball gun tank can also make a nice backup.2.5-5 lb. cylinder for 20-gallon aquariums or smaller; 5 lb. cylinder for 25- to 40-gallon aquariums; 10 lb. cylinder for 55-gallon aquariums or larger; If you plan on using one regulator with five or six aquariums, then scale the CO 2 cylinder size accordingly. For more information on CO2 systems in high tech planted tanks, read the full ...Septic tanks are a great way to manage wastewater and sewage in rural areas where there is no access to a municipal sewer system. While septic tanks are an effective solution for w...5lb CO2 - Food Grade. $24.99 CAD. or 4 interest-free payments of $6.25 CAD with. ⓘ. Exchange*. Add to cart. 5lb Food Grade Co2. Local Delivery Available - Select local delivery at checkout. Available for exchange.A 20-pound propane tank will provide about 10 hours of heat for patio heaters. On average, patio heaters will cost about $1.50 to $3.00 an hour to operate. The usage reflects the patio heater settings. It’s important to note that these tanks come in different sizes, and due to differences in capacity – they won’t get all last for an equal ...As the world becomes more conscious about climate change, it’s important to take steps to reduce our carbon footprint. One way to do this is by lowering your car’s CO2 emissions. N...How long should a 5lb CO2 tank last? I feel like I'm going through these things at a totally unreasonable rate. I've completely depleted two by carbing 3 kegs and serving maybe …

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I've got 3, 2-way manifolds running 6 different kegs. So 3 tanks... Mostly each 2way manifold is running to each 10 gallon batch I do (2 kegs per batch). I also starsan purge each keg before I fill them. I feel like I go through Co2 (the tanks) rather quickly. I haven't been keeping track. There...One 90 cm tank could probably consume a 2-liter tank of CO2 in 3-4 months, depending on the usage. High-light setups as already known does require more CO2 since plant photosynthesis is way faster compared to low or medium lit tanks and of course larger tanks would naturally need more CO2. Medium sized, low to medium lit tanks would only ...5lb will last 6-7months on for about 6-10hours a day at 2-3bps. on a 29gal. I moved up to a 75gal and added a pH controller and it last 6months tops now. And it cost the same to fill up a 5lb-20lb tank so buy as big as you can. Like.Call Us Today! 704‑827‑8770. How long will a 5 lb., 10 lb., and 20 lb. CO2 tank last? February 19, 2015. SodaParts. A 20 lb. CO 2 tank will yield approximately 90 gallons of …ten footers Registered User. #4 ten footers, Jan 13, 2010. the calculator said that in my 7x7.5x5.5 room that a 20lb tank would only last .23 hours :-/. any help with this, i am looking into buying a co2 tank and i need help on the size and cost side of this, i have tried searching hella (thats why i am bringing back this old ass thread) so if ...How much CO2 is in a 5lb tank? 5lb CO2 tank will make roughly 85 to 132.5 liters. Can you SodaStream coffee? Coffee. To try your own carbonated coffee, fill the SodaStream bottle roughly halfway with cold brew coffee or hot brewed coffee that has been chilled. If the coffee isn't cold, it won't carbonate well.How much is a 5lb CO2 tank worth? 6038 Views 12 Replies 6 Participants Last post by Elyssa, May 16, 2013. Elyssa Discussion Starter ...Typically, a paintball tank can last up to 15 years, but this duration can vary based on the tank's quality, material, usage conditions, and maintenance. Regular maintenance, including a hydro test every three to five years, is crucial. This test identifies potential issues like cracks, leaks, and dents. If you neglect these tests for more ...Here's how this works: First, you'll need a CO2 tank, like this 24oz paintball tank ($22,) or even this massive 10lb tank ($75,) that you'll use with your SodaStream going forward. Both of ... ….

It depends on the DOT cylinder type (for U.S. tanks) not the manufacturer. A 5# aluminum cylinder should be a 3AL2015 and is supposed to weigh 7.6 lbs plus the valve weight. A 10# aluminum weighs 12.9 lbs. It should also be approx 800 psig when full. A 5# steel tank weighs 12lbs.Specific Aspects of a Planted Tank. ... 5Lb Co2 for two 20 Gallon tanks. Jump to Latest Follow ... 4 participants last post by xmas_one Feb 27, 2013. O. owens81jw ...Reef Central Online Community > General Interest Forums > Lighting, Filtration & Other Equipment: How long can a CO2 tank last?How long does a 5lb CO2 tank last? Thread starter kegtoe; Start date Oct 30, 2009; Help Support Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum: ... Just for reference, I usually get 5 kegs per tank in which I use the CO2 for force carbing, serving, cleaning/sanitizing lines in between kegs. Reply. B. BuzzCraft Well …It’s possible it’s leaking. Might wanna check with some soapy water. my 10lb tank lasts me about a year on my freshwater tank with maybe 6 bubbles per second running 10 hours a day. Not sure if calcium reactors run 24/7 but at your bubble count I’d imagine your tank should last about the same amount as my 10lb I would think. Nov 17, 2022.For when you’re welding mild steel. And need some Argon and Carbon Dioxide gas tanks. The amount of high pressure gas in a tank is measure in cubic feet (cf) Tank Size 1 has 20 cf Argon/CO2 gas. Tank Size 2 has a least 40 cf Argon/CO2 gas. Tank Size 3 has at least 80 cf Argon/CO2 gas. Tank Size 4 has at least 125 cf Argon/CO2 gas.Call Us Today! 704‑827‑8770. How long will a 5 lb., 10 lb., and 20 lb. CO2 tank last? February 19, 2015. SodaParts. A 20 lb. CO 2 tank will yield approximately 90 gallons of …Are you running out of CO2 for your tank and need to find a refill location nearby? Don’t worry, we’ve got you covered. In this article, we will guide you through the process of fi...Jan 14, 2012. Messages. 1,022. Your tank will vary depending on your water, tank size, and bubble count. Making sure tight connections is also key, I learned this the hard way as a 10 lb lasted 6 weeks.and conversely...if it doesnt last all that long. I'm looking for alternatives for co2... I mean, honestly, if I used Compressed air, I can get it to 250 psi in that 2.5lb cylinder. it would save me a 30-45 minute drive into town to get it filled if I have to do it somewhat often....and I could do repeated 250psi fills pretty much for free ... How long will a 5lb co2 tank last, How many kegs can be dispensed from a CO2 tank? A 5-lb CO2 tank will last between 6-8 half barrels or full kegs before it needs to be filled. A 10-lb CO2 tank will dispense 10-13 full kegs per fill. This number can be higher or lower based on how often you're using your kegerator, the level of carbonation, and if your system is properly balanced., The cylinder should have its tare weight stamped on it, which is the weight of the tank when empty. Subtract this from the current weight and you have the weight of CO2 in the cylinder. The "pounds" rating of a CO2 tank is how many pounds of CO2 they hold. A 5 lb cylinder might have 7.5lb tare weight, and would weigh 7.5lbs when empty, and 12 ..., Feb 27, 2024 · Aim to fill the 5 lb CO2 tank to its recommended pressure, which is typically around 800-900 psi (pounds per square inch). Be patient and fill the tank slowly. Rushing the filling process can lead to overfilling or potential safety hazards. Continue to monitor the pressure gauges as you fill the CO2 tank. , I've got a kegerator with 5 taps. For the longest time I've had only 2 to 3 cornies hooked up at a time and the CO2 has seemed to last for 4 months or so. Ive recently ramped up my brewing and for the first time have had all 5 taps occupied and rotating since December. My CO2 is only lasting..., These empty 5 lb CO2 cylinders are perfect for homebrew and commercial keg purposes. The aluminum construction is both lightweight, and highly corrosion ..., We may earn a commission for products purchased through links on this page, Last one. 6 sold. Sponsored. 5LB CO2 Tank Aluminum Gas Cylinder For Kegerator Keezer USA DOT CGA320 Valve. Opens in a new window or tab. Brand New. ... 5lb CO2 Tank Wall Anchor Mounting Bracket with Adjustable Steel Chain Hook Latch. Opens in a new window or tab. Brand New. $13.99. Save up to 10% when you buy more., There are specific size tanks you can use for co2: 2.Five, five, 10, 15, 20, 50 lb, and so on. It would make experience to assume that the price to fill a 5 lb tank could be two times as tons as a 2.5 lb tank, and to fill a ten lb tank could be twice as a lot as filling a five lb tank, and so on, Getting my first sixtel from Brew Republic, where I work (ed) part time (until Northam shut down all but carryout orders, so they're on a skeleton crew now). The Brewers have informed me they don't have the gear to fill CO2 from their supply. They recommend Roberts Oxygen, who supplies them. Those locations are a bit out of the way, but I see ..., The tank-side pressure is mostly measuring the temperature of the CO₂ tank, not the actual amount of CO₂ remaining. Above the triple-point of CO₂ at about 517 kPa ~ 75 psi, the pressure reading is dominated not by the amount of CO₂, but the temperature, which relates to the fraction of gas vs. liquid in that equilibrium.You'll notice your CO₂ tank will basically stay around 500-600 ..., Once I start injecting co2 it jumps to 800ish after a couple minutes. I filled up the little 5lb tank about a month or so ago I'm already down to 600. I am running a high bps from two points but I didn't think it would go so fast especially when the 10 (I know dbl the size) lasted sooooo long!, I picked up a used 5lb tank and JBJ regulator recently and I think one of the seals might be leaking. It was set at about 2 bubbles per second and only lasted 6 days. This seems awful quick to go through the bottle. How long do your fills last? I've heard of spraying soapy water on the thing to f..., A Siphon C02 tank is required for your Club Cannon product to create the desired effect. Once the fog starts to appear thin, your tank is depleted of liquid. It is now time to get a refill. CO2 can be purchased from any local gas or welding supplier. The C02 will shoot 20-25 foot plumes, 2-3 feet wide., Took about a minute or two to install the tank adapter. DO NOT FORGET THE TEFLON WASHER that should have been included with the adapter or you'll get massive leaking. My adapter had a small lip on the inside of the tank side connector, the washer fit perfectly around that lip - then push the connector+washer onto the CO2 tank connector, and ..., It depends on a few factors. If you are using the CO2 only to dispense the beer, not to carbonate it, you may get as many as thirty 5 gallon Cornelius kegs out of one 5 lb. CO2 cylinder. However, most homebrewers are also using CO2 to force carbonate their brew, so this brings it down to around ten 5 gallon Cornelius kegs out of one 5 lb. CO2 ..., Physics says you're wrong. CO2 liquefies at 870psi at room temp that pressure doesn't change. Even paintball tanks are filled with liquid CO2. All CO2 tanks hold liquid CO2, fill stations just have a siphon tube so it fills with liquid instead of the gas coming from the regulator., How long will a 5 lb., 10 lb., and 20 lb. CO2 tank last? What does the carbonator do? Search for: Recent Posts. New Website Just Launched! SodaParts on DIY Network; A Brief History of Soda; Environmental Benefits of Soda Fountains; Archives. December 2015; April 2012; October 2011; June 2011;, Generally, CO2 tanks come in a variety of sizes, ranging from 2.5 to 20 pounds. The 2.5 lb tank is usually 7.5 in (19 cm) tall and 12 in (30 cm) in diameter. ... How long will 20lb CO2 tank last in grow room? The answer to this question depends on a variety of factors, such as the size of the grow room and the number of plants inside it. ..., So I never measure how frequently I am swapping out CO2 tanks. My 60l canisters last 2 to 2-1/2 weeks, and other than my morning coffee (about .6l), it is my main hydration. I make a liter a day with a Terra and it lasts a month. If I make it SUPER fizzy it lasts 3 weeks making a liter a day., Carbon dioxide, also known by the chemical formula CO2, has a higher density than the other gases found in air, which makes CO2 heavier than air. Air is composed of approximately 7..., Search titles only By: Search Advanced search…, and conversely...if it doesnt last all that long. I'm looking for alternatives for co2... I mean, honestly, if I used Compressed air, I can get it to 250 psi in that 2.5lb cylinder. it would save me a 30-45 minute drive into town to get it filled if I have to do it somewhat often....and I could do repeated 250psi fills pretty much for free ..., I fill from a 50 to 5's often and as the bigger tank empties you will notice the 5# getting filled less and less like this: 4.8, 4.7, 4.6.... Get a high pressure hose rated 2500plus PSI to err on the high side and have a shop crimp in 1/4" females on both ends. Teflon tape a cga 320 stem RH and nut on both sides., Last visit to my CO2 supplier, I changed my swap out size from a 5lb. tank to a 10lb. tank. The 10lb. tank is a steel tank and it doesn't have a tare weight stamped into it. Can anyone share the tare weight for their 10lb. steel tank? I know there could be variations in weight, but just to get a ballpark estimate., and conversely...if it doesnt last all that long. I'm looking for alternatives for co2... I mean, honestly, if I used Compressed air, I can get it to 250 psi in that 2.5lb cylinder. it would save me a 30-45 minute drive into town to get it filled if I have to do it somewhat often....and I could do repeated 250psi fills pretty much for free ..., Recertified 5 lb Steel CO2 Cylinder. $ 42.80. Compact recertified 5 lb steel CO2 cylinder in a convenient size for beverage dispensing, industrial, welding, scientific, hydroponics, aquariums and special effects. Add to cart. *Shipping is estimated in cart. SKU: Recon5LBSTVLV GTIN: 713331085591., A 5lb tank isn't the tank being 5LB, it's that it holds 5lb of CO within the tank. So you're looking at $60 in SS canisters vs the $23.50 if you use a coupon. Also, you don't need a pressure regulator. CO2 pressure is all based on temperature not volume. So, a SS canister has the same pressures as a 5lb tank in the same room., 1-3 of 3 Answers. I can't give an answer based on actual experience yet, because my purchase is quite recent. That said, best on research and feedback from friends that have kegerators similar to this, a 5-lb tank usually lasts about 6 or 7 half barrels. So from there it depends how much you end up drinking., I just emptied my CO2 tank and it's only been a year… I have a 20# tank, 3 - 5 gallon kegs, and a 2 1/2 gallon keg I use for soda water. ... How long does your CO2 tank last? Kegging. lowflyingbrews January 7, 2015, ... I have a 5 lb on the fridge and a second seperate 5 lb for carbing. Both get filled roughly once a year. brew_cat March 8 ..., How long does a bottle of c02 last? I have a 5lb bottle, set at 12 psi thru a clippard needle valve thats always open. The shop that fills the tank only fills it to 800psi. Its only been about 3 weeks to a month and Im almost out. I'm pretty sure I have a leak on my regulator but i'm not sure i'm not sure how long it is suppose to last. thanks ..., At STP ~44 grams (one mole) of CO2 will occupy about ~22.2 liters of volume. a proper 5lb co2 fill has about 50 moles of CO2 gas. This works out to about 1100l of CO2 at STP. Working at STP, a 2 volume batch of beer will use approximately 46l of CO2. That yields a theoretical value of 46 kegs per fill for force carbing., Jan 9, 2008 · I'm not saying it's bad to run CO2 24/7, a lot of people with great tanks do it, but it uses CO2 a lot faster. Eheim Pimp #254, Eheim Wolverine #1 55 Gallon Work in progress , Since my search results excluded all words from "how long does a 5 lb co2 tank last" except for "long" and "tank"! How long does a 5lb co2 tank last for you guys? I can't decide whether or not to spend the extra $35 dollars for the 10LB tank. Thanks!