Sodastream machines are a fun way to turn tap water into carbonated water. However, the canisters are expensive and generally require a trip to the store to get a replacement. Lifehacker has a workaro
CO2 Tanks, Cylinders, and Canisters: What's the difference?
Drinkmate OmniFizz Sparkling Water and Soda Maker, Carbonates Any Drink, Bubble Up Bundle - Includes Two 60L CO2 Cylinders, One Carbonation Bottle, and Fizz Infuser (Matte Black): Home & Kitchen
Container feels like a bit more than half full.
Half Full Soda Stream 130L CO2 Carbonator Canister Refill 33oz
How does a CO2 SodaStream machine reduce the vapor pressure of CO2 to its maximum working pressure of 145 psi? - Quora
SodaStream Terra Sparkling Water Maker Misty - Blue
Saving Money for Sodastream Users: CO2 - EXEYE Software Tools Inc
Saving Money for Sodastream Users: CO2 - EXEYE Software Tools Inc
Save Money with SodaStream - Lazy Man and Money
How to Refill your Sodastream CO2 Cartridge for under $1.00!
Drinkmate OmniFizz Sparkling Water and Soda Maker, Carbonates Any Drink, with 3oz CO2 Test Cylinder (Royal Red): Home & Kitchen
How to Save a Ton of Money on Your SodaStream Refills
SodaStream Jet Sparkling Water Maker, Kit w/60l Cylinder, Silver: Home & Kitchen
Sodastream CO2 Exchange 60L