Where did you buy/refill your pressurized CO2?

I got mine from a brewery store for 60 dollars but it was only a 5lbs tank. Craigslist can be a great place to fine a used one. A 10 lbs tank will cost around 75-100 dollars for a used one. At least those are the prices i seem to find in my area. You can get them refiled at a brewery store, hydroponic shop, and a place that refills fire extinguishers (this option is probably the cheapest).

I get my 20# refilled (exchanged) at Praxaire... costs about $25.
Welding supply store

I bought my new 10# one from aquariumplants.com. It has good prices.
I get it filled at airgas (airgas.com) for 20something dollars.

before you buy, make sure that your refill location refils your tank while you wait and isnt an exchange only place. No reason to buy a new shiny one if you will only have to trade it in an hour after you receive it in the mail.

In our little town, we go to the place where they sell and fill the gas bottles for the grill. Costs around $8 for a 2.5 pounder.

Good morning standard,
Please take a look at question: about transporting the gas bottle safeley.
It is best to keep the bottle upright AND
as soon as your regulator is attached/installed/strewed onto the top of the bottle, MAKE sure that you bottle stays upright.

I ruined a open Dupla regulator when the bottle tipped over and liquid CO-2 went thru the regulator.

Standard,
I have 2 questions for you in regards to to CO-2 regulators and indicators.
For many years I have been using a Dupla regulator on the one planted tank that I supplied with CO-2...no problem with the works, disconnecting or hooking up.

I just dug around in my aquarium equipment and unearthed a regulator from the "Aquarium Landscapes" Company in Ohio. While still living in MN I bought this regulator at one of our MAS auctions for $80, but so far never used it. It is #RMR Co-2 Regulator 320.

Do you know anything about that company and its products?
Do I need to know anything in addition to the Dupla experience for connecting this regulator to my 5 Lb. tank. (I noticed this unit on sale for $44). Wonder why it so cheap (Price new = $122).

The CO-2 drop counter I read about here very often is the same thing as my Dupla visiual indicator. I need to add a certain amount of tank water and then 2 drops of Dupla indicator fluid. Click the gadget together + back into the tank it goes.

What kind of indicator fluid is used in the American drop counter?
Please visit my Personal Gallery - CO-2 picture pages about my set up are there.
Thanks in advance for your help.
ta, ta.

standardbyker63 said:

How long does your 5# cylinder last you and on what size tank? I may end up going with that size if it will fit in the tank stand with the reg on it. If not, ill probably just go with the 10#. Also, am I correct in my understanding that the tanks are to be operated upright and not laying down? I believe they are filled with liquid CO2 that releases as a gas due to pressure changes, therefore laying it over for operation would vent the liquid? Or am I way off?

Thanks.

Click to expand...

I have a 29 gallon tank. I believe this should last me around 8 months or so. However, if i had the room i would go for a 10 or a 20 lb tank because it almost cost the same to refill those tanks as it does for a 5.