Yes things will change as the tank warms up. I would suggest not setting it up until it is a room temperature.
The single guage measures the output pressure. That means you cannot measure the tank pressure, which is normally at abou 850 pounds until the liquid co2 is used up and only gas remains in the tank. Then the tank pressure starts to drop - slowly. So you will have to pick up the tank every so often and try to guage the amount of liquid in it.
I would suggest you try to resell the single guage regulator and get one with two guages. Harbor Freight and other places have such for $35-38 or so. The 2nd guage is really handly.
Also be sure to get a needle valve. Clippard's MNV-4k2 works adequately. If you have a local distributor, it should cost about $11. About double that from an aquarium mail order place.
For more info on pressurized co2, look at my web site.
Bob
http://members.cox.net/tulsaalstons/AquaticPlants.htm#High Pressure CO2
The single guage measures the output pressure. That means you cannot measure the tank pressure, which is normally at abou 850 pounds until the liquid co2 is used up and only gas remains in the tank. Then the tank pressure starts to drop - slowly. So you will have to pick up the tank every so often and try to guage the amount of liquid in it.
I would suggest you try to resell the single guage regulator and get one with two guages. Harbor Freight and other places have such for $35-38 or so. The 2nd guage is really handly.
Also be sure to get a needle valve. Clippard's MNV-4k2 works adequately. If you have a local distributor, it should cost about $11. About double that from an aquarium mail order place.
For more info on pressurized co2, look at my web site.
Bob
http://members.cox.net/tulsaalstons/AquaticPlants.htm#High Pressure CO2