Here's a video of my 55gallon FW planted community tank. Just got the CO2 set up and running. I have the co2art set up dual stage regulator. Sucks they just opened a shop in the US when I got it they shipped from Germany and took like 2 weeks but anyways. Also it is top of the line setup. Yes it's pricey but it comes with dual stage and bubble counter in 1. And of course the diffuser and co2 resistant tubing and a check valve. Back to the main thing lol I called a shop and they told me 180 for first time getting the 5lb tank filled and all I was like holy crap that's expensive. Well the guy who I bought my torch from also has plant d FW setups and told me where he get his CO2. Well it only cost me 80$ for the 5lb tank and is 24$ each fill up. Not to bad. Well now I'm in the fine tuning of the CO2 as I don't want to immediately dump a ton of CO2 into my tank and kill all my fish. I have the CO2 drop checker to let me know when I'm in that 25-30ppm dissolved CO2. But anyways here's a video.