Home & Garden Home Free Your Sodastream With the SodaMod CO2 Adapter By Shea Gunther Writer University of New Hampshire Rochester Institute of Technology University of Southern Maine Shea Gunther is a writer, entrepreneur, and podcaster living in Portland, Maine. He covers topics such as renewable energy, climate change, and nature. our editorial process Shea Gunther Updated June 05, 2017 Photo: Evan/Flickr. Share Twitter Pinterest Email Home Sustainable Eating Pest Control Natural Cleaning DIY Family Green Living Thrift & Minimalism I love my Sodastream soda maker (you can read a review I wrote a couple of years ago here), but hate having to spend $20 for a couple of dollars worth of CO2 gas everytime it runs dry. The Sodastream has a proprietary connector design that locks you into using their custom tanks which allows Sodastream to charge a monopoly price for a commodity product. That's their business model, and more power to them, but if you're not keen on being price-gouged on gas, consider the SodaMod, a small brass adapter that lets you use cheap paintball CO2 tanks in your Sodastream. A paintball tank will set you back around $20 and will cost just a few dollars to refill with CO2 at your local sporting goods store or paintball field, saving you ~$17 per fill up. The SodaMod is $60 but will quickly pay for itself with those kind of savings. Here's a video of the SodaMod in action. Free the gas! • 20 oz. CO2 tank on Amazon • Buy the SodaMod adapter For the more adventurous, here's a video about how to refill the Sodastream tank yourself using dry ice. This way seems a bit more dangerous as you have to make sure you don't put too much dry ice. The Sodastream tanks have a safety valve that would presumably blow if it did have too much gas, but even still, better to play it safe there. Just don't be stupid. Are you on Twitter? Follow me (@sheagunther) there, I give good tweets. And if you really like my writing, you can join my Facebook page.