I explain in depth How various hydrogen functional blocks operate. Space Engineers - Engines, Generators, and Tanks. Space Engineers - Hydrogen Subscribe for more. Art links: www.deviantart.com/witchkiller33
This makes me wish that there was a hydrogen calculator that you could input how many hydrogen thrusters and engines you have it would show you how many 02H2 generators you needed and how much ice you would need to keep it going. Thanks for making the video cause I, a somewhat experienced player, barely know how the system works myself!
For small ships ion and atmospheric are superior imo, but for capitals, especially for bulk transport or moving entire stations, hydrogen is king (you can always mix some hydrogen into a build for a boost when needed). You have an entire moon made of ice to farm with no atmosphere.