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CO2 tank dumps?
OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028.
Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. Now to my main worry, TANK DUMPS!!! I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Many thanx for your much needed advice! Planted Discus tank. (300 litres) Temp - 84 NH3 - 0 NO2 - 0 NO3 - 20mg/l pH - 6.5 KH - 2 degrees GH - 8 degrees |
CO2 tank dumps?
http://www.thekrib.com/Plants/CO2/
I think the risk of end-of-tank dump is only for CO2 tanks that do not have a needle valve controlling them. "Skunky" wrote in message ... OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028. Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. Now to my main worry, TANK DUMPS!!! I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Many thanx for your much needed advice! Planted Discus tank. (300 litres) Temp - 84 NH3 - 0 NO2 - 0 NO3 - 20mg/l pH - 6.5 KH - 2 degrees GH - 8 degrees -- Skunky 'Peace On Earth.....And In The Water' ------------------------------------------------------------------------ posted via www.GardenBanter.co.uk ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- |
CO2 tank dumps?
Take a look at my web site. Scroll down to the last two items on end of
tank dump. http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston http://members.cox.net/tulsaalstons/ "Skunky" wrote in message ... OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028. Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. Now to my main worry, TANK DUMPS!!! I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Many thanx for your much needed advice! Planted Discus tank. (300 litres) Temp - 84 NH3 - 0 NO2 - 0 NO3 - 20mg/l pH - 6.5 KH - 2 degrees GH - 8 degrees -- Skunky 'Peace On Earth.....And In The Water' ------------------------------------------------------------------------ posted via www.GardenBanter.co.uk ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 |
CO2 tank dumps?
For those that maintain a "tank dump" is possible with a 2-stage regulator,
please explain why my oxy-acetylene torch doesn't act like a flame thrower when the acetylene tank runs out or why the oxygen tank doesn't blast out the flame when it goes to empty. Trust me, neither thing happens. I have used CO2 on a 120 with 8 wild discus and huge schools of cardinals and rummy noses for over three years and no "dump". Maybe a piscine urban legend? "Bob Alston" wrote in message ... Take a look at my web site. Scroll down to the last two items on end of tank dump. http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- |
CO2 tank dumps?
I don't say this is an issue with a two stage regulator. I only use a
single stage regulator, with dual guages. I have never heard of tank dump in context of a 2-stage regulator. -- Bob Alston http://members.cox.net/tulsaalstons/ "Robert" wrote in message ... For those that maintain a "tank dump" is possible with a 2-stage regulator, please explain why my oxy-acetylene torch doesn't act like a flame thrower when the acetylene tank runs out or why the oxygen tank doesn't blast out the flame when it goes to empty. Trust me, neither thing happens. I have used CO2 on a 120 with 8 wild discus and huge schools of cardinals and rummy noses for over three years and no "dump". Maybe a piscine urban legend? "Bob Alston" wrote in message ... Take a look at my web site. Scroll down to the last two items on end of tank dump. http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 |
CO2 tank dumps?
how can one tell if they have a single or two stage regulator?
"Bob Alston" wrote in message ... I don't say this is an issue with a two stage regulator. I only use a single stage regulator, with dual guages. I have never heard of tank dump in context of a 2-stage regulator. -- Bob Alston http://members.cox.net/tulsaalstons/ "Robert" wrote in message ... For those that maintain a "tank dump" is possible with a 2-stage regulator, please explain why my oxy-acetylene torch doesn't act like a flame thrower when the acetylene tank runs out or why the oxygen tank doesn't blast out the flame when it goes to empty. Trust me, neither thing happens. I have used CO2 on a 120 with 8 wild discus and huge schools of cardinals and rummy noses for over three years and no "dump". Maybe a piscine urban legend? "Bob Alston" wrote in message ... Take a look at my web site. Scroll down to the last two items on end of tank dump. http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 |
When you say a 2 stage regulator, does this mean when a needle valve is incorperated. I would imagine that a tank dump would not be possible due to the fine adjustment of the valve, should an mount of back pressure build up, the valve would control the pressure due to it's fine adjustment????
Thanx |
CO2 tank dumps?
Apparently not the case. Read the articles on my web site. Se my earlier
post for direct url. -- Bob Alston http://members.cox.net/tulsaalstons/ "Skunky" wrote in message ... When you say a 2 stage regulator, does this mean when a needle valve is incorperated. I would imagine that a tank dump would not be possible due to the fine adjustment of the valve, should an mount of back pressure build up, the valve would control the pressure due to it's fine adjustment???? Thanx -- Skunky 'Peace On Earth.....And In The Water' ------------------------------------------------------------------------ posted via www.GardenBanter.co.uk ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 |
CO2 tank dumps?
midpost On Sun, 25 May 2003 11:18:19 +0100, Skunky wrote: OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028. Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. a measure of pH and hardness kh on a co2 graph will show you where your concentration in mg/l is (see co2 links) http://www.thekrib.com/Plants/CO2/kh-ph-co2-chart.html http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm my favorite.. Now to my main worry, TANK DUMPS!!! Tank dumps are essentially alleviated/eliminated with the use of a metering device (needle valve). This is because no matter what happens at the regulator it's the needle valve that is regulating the flow into your tank. The regulator is just setting your output pressure to the needle valve. I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Yes it can and it appears that you have all of the necessary hardware in place to curb this malady. Essentially what happens is that the cylinder dumps the remaining gas in the tank. The excess co2 blankets the surface of the aquarium (especially those with a tight fitting lid) thereby prohibiting an oxygen gas exchange at the waters surface. This happens because there is nothing to meter the gas into the aquarium. Now IME I've got a needle valve regulating the flow to my diy reactor and I've had my cylinder at less than 50 pounds pressure before I've cut it loose and taken it in for an exchange. I have had no ill effects in letting the cylinder go this low. It takes quite a bit of time once the pressure gauge starts to drop (no more liquid in the cylinder) to where you'd get to the panic point anyway. I'd think that most people give their cylinder gauges a daily glance while they're checking the operation of everything else. If you're a paranoid sort you can also valve the cylinder out if you think it's gonna dump. The regulators high/low side and the line to the needle valve will stay charged for quite a bit of time (depending on your flow rate). You can repeat this line charging process till you have the time to go get an exchange cylinder. hth Many thanx for your much needed advice! snip |
CO2 tank dumps?
Tank dumps are essentially alleviated/eliminated with the use of a
metering device (needle valve). This is because no matter what happens at the regulator it's the needle valve that is regulating the flow into your tank. I disagree. There may be a level of pressure that "floods" the needle valve, letting no more gas thru it. However, at the level of pressure I use, between 8 and 20 lbs out of the regulator, the amount of gas flowing through the needle valve is very much affected by pressure. You can easily see this if you have a bubble counter by varying the regulator output pressure. The key is to have a high enough pressure, such that at end of tank, the increase in pressure is small, in comparison to the existing pressure, so that the increase in co2 flowing is also small. See the link below for a good explanation: http://www.fishgeeks.com/modules.php...id+vapor#71249 See my web site for more links to articles on end-of-tank dump: http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston http://members.cox.net/tulsaalstons/ Joe Ferenchik wrote in message ... midpost On Sun, 25 May 2003 11:18:19 +0100, Skunky wrote: OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028. Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. a measure of pH and hardness kh on a co2 graph will show you where your concentration in mg/l is (see co2 links) http://www.thekrib.com/Plants/CO2/kh-ph-co2-chart.html http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm my favorite.. Now to my main worry, TANK DUMPS!!! Tank dumps are essentially alleviated/eliminated with the use of a metering device (needle valve). This is because no matter what happens at the regulator it's the needle valve that is regulating the flow into your tank. The regulator is just setting your output pressure to the needle valve. I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Yes it can and it appears that you have all of the necessary hardware in place to curb this malady. Essentially what happens is that the cylinder dumps the remaining gas in the tank. The excess co2 blankets the surface of the aquarium (especially those with a tight fitting lid) thereby prohibiting an oxygen gas exchange at the waters surface. This happens because there is nothing to meter the gas into the aquarium. Now IME I've got a needle valve regulating the flow to my diy reactor and I've had my cylinder at less than 50 pounds pressure before I've cut it loose and taken it in for an exchange. I have had no ill effects in letting the cylinder go this low. It takes quite a bit of time once the pressure gauge starts to drop (no more liquid in the cylinder) to where you'd get to the panic point anyway. I'd think that most people give their cylinder gauges a daily glance while they're checking the operation of everything else. If you're a paranoid sort you can also valve the cylinder out if you think it's gonna dump. The regulators high/low side and the line to the needle valve will stay charged for quite a bit of time (depending on your flow rate). You can repeat this line charging process till you have the time to go get an exchange cylinder. hth Many thanx for your much needed advice! snip --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.484 / Virus Database: 282 - Release Date: 5/27/2003 |
CO2 tank dumps?
Take a look at my web site. Scroll down to the last two items on end of
tank dump. http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston http://members.cox.net/tulsaalstons/ "Skunky" wrote in message ... OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028. Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. Now to my main worry, TANK DUMPS!!! I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Many thanx for your much needed advice! Planted Discus tank. (300 litres) Temp - 84 NH3 - 0 NO2 - 0 NO3 - 20mg/l pH - 6.5 KH - 2 degrees GH - 8 degrees -- Skunky 'Peace On Earth.....And In The Water' ------------------------------------------------------------------------ posted via www.GardenBanter.co.uk ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 |
CO2 tank dumps?
Apparently not the case. Read the articles on my web site. Se my earlier
post for direct url. -- Bob Alston http://members.cox.net/tulsaalstons/ "Skunky" wrote in message ... When you say a 2 stage regulator, does this mean when a needle valve is incorperated. I would imagine that a tank dump would not be possible due to the fine adjustment of the valve, should an mount of back pressure build up, the valve would control the pressure due to it's fine adjustment???? Thanx -- Skunky 'Peace On Earth.....And In The Water' ------------------------------------------------------------------------ posted via www.GardenBanter.co.uk ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 |
CO2 tank dumps?
Tank dumps are essentially alleviated/eliminated with the use of a
metering device (needle valve). This is because no matter what happens at the regulator it's the needle valve that is regulating the flow into your tank. I disagree. There may be a level of pressure that "floods" the needle valve, letting no more gas thru it. However, at the level of pressure I use, between 8 and 20 lbs out of the regulator, the amount of gas flowing through the needle valve is very much affected by pressure. You can easily see this if you have a bubble counter by varying the regulator output pressure. The key is to have a high enough pressure, such that at end of tank, the increase in pressure is small, in comparison to the existing pressure, so that the increase in co2 flowing is also small. See the link below for a good explanation: http://www.fishgeeks.com/modules.php...id+vapor#71249 See my web site for more links to articles on end-of-tank dump: http://members.cox.net/tulsaalstons/...Pressure%20CO2 -- Bob Alston http://members.cox.net/tulsaalstons/ Joe Ferenchik wrote in message ... midpost On Sun, 25 May 2003 11:18:19 +0100, Skunky wrote: OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028. Firstly, I have set the regulator pressure @ 1 bar, is this enough? Bubble rate is 1 bubble per second. a measure of pH and hardness kh on a co2 graph will show you where your concentration in mg/l is (see co2 links) http://www.thekrib.com/Plants/CO2/kh-ph-co2-chart.html http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm my favorite.. Now to my main worry, TANK DUMPS!!! Tank dumps are essentially alleviated/eliminated with the use of a metering device (needle valve). This is because no matter what happens at the regulator it's the needle valve that is regulating the flow into your tank. The regulator is just setting your output pressure to the needle valve. I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how? Yes it can and it appears that you have all of the necessary hardware in place to curb this malady. Essentially what happens is that the cylinder dumps the remaining gas in the tank. The excess co2 blankets the surface of the aquarium (especially those with a tight fitting lid) thereby prohibiting an oxygen gas exchange at the waters surface. This happens because there is nothing to meter the gas into the aquarium. Now IME I've got a needle valve regulating the flow to my diy reactor and I've had my cylinder at less than 50 pounds pressure before I've cut it loose and taken it in for an exchange. I have had no ill effects in letting the cylinder go this low. It takes quite a bit of time once the pressure gauge starts to drop (no more liquid in the cylinder) to where you'd get to the panic point anyway. I'd think that most people give their cylinder gauges a daily glance while they're checking the operation of everything else. If you're a paranoid sort you can also valve the cylinder out if you think it's gonna dump. The regulators high/low side and the line to the needle valve will stay charged for quite a bit of time (depending on your flow rate). You can repeat this line charging process till you have the time to go get an exchange cylinder. hth Many thanx for your much needed advice! snip --- Bob's Dell 4400 - Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.484 / Virus Database: 282 - Release Date: 5/27/2003 |
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