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Old 01-19-2013, 04:35 AM   #16
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When I started out with co2 I bought 2 Micromatics regulators: it was 'cheap' for a brand new one, it was featured on one respected web site as the premium regulator for aquarium co2, I was afraid to buy something used, and it was shiny.

That purchase was a mistake, ~$140 down the drain. After 4 EOTDs, several middle-of-the-night emergency water changes, some dead fish, and countless hours trying to figure out what went wrong I finally replaced both with double-stages. Like every time I try to save $10 I waste a $100.

There are endless debates on 1-stage vs 2-stage, EOTDs, and so on and I don't want another one here, please. BUT this forum is where the information and expertise is - take your time, ask for help, and do it once and save yourself some headache and heartache later.

Given that you have already bought a regulator, do keep an eye on it and the fish once it starts to get empty until it earns your trust. I bet yours will work just fine for the next 40 years with 0 issues, but do prove it to yourself first.
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Old 01-19-2013, 04:50 AM   #17
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When I started out with co2 I bought 2 Micromatics regulators: it was 'cheap' for a brand new one, it was featured on one respected web site as the premium regulator for aquarium co2, I was afraid to buy something used, and it was shiny.

That purchase was a mistake, ~$140 down the drain. After 4 EOTDs, several middle-of-the-night emergency water changes, some dead fish, and countless hours trying to figure out what went wrong I finally replaced both with double-stages. Like every time I try to save $10 I waste a $100.

There are endless debates on 1-stage vs 2-stage, EOTDs, and so on and I don't want another one here, please. BUT this forum is where the information and expertise is - take your time, ask for help, and do it once and save yourself some headache and heartache later.

Given that you have already bought a regulator, do keep an eye on it and the fish once it starts to get empty until it earns your trust. I bet yours will work just fine for the next 40 years with 0 issues, but do prove it to yourself first.
What type of needle valve was on yours that had the EOTD?
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Old 01-19-2013, 07:05 AM   #18
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What type of needle valve was on yours that had the EOTD?
Ideal 52-1-12. Needle valves don't help much with EOTD with compressible gases.
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Old 01-20-2013, 03:27 AM   #19
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So the consensus is that I should get a 2 stage?
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Old 01-20-2013, 04:05 AM   #20
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So the consensus is that I should get a 2 stage?
It depends.

If you are religious about refilling your CO2 cylinder when the high pressure gauge begins to decrease (indicating that no more liquid CO2 remains in the cylinder and only gaseous CO2 is left), then you will not experience EOTD.

Alternatively, if you want to run your tank all the way down to zero, then a dual stage regulator will allow you to do so.
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