I've never seen this system before and do not understand how this works based on this guys explanations. I like it because it doesn't require drilling the tank but don't understand what's going on. Could someone please explain it to me? It's the first part of the below video. The only thing I don't understand is the intake.
https://www.youtube.com/watch?v=Hyr84QG7_gQ
[video=youtube;Hyr84QG7_gQ]https://www.youtube.com/watch?v=Hyr84QG7_gQ[/video]
https://www.youtube.com/watch?v=Hyr84QG7_gQ
[video=youtube;Hyr84QG7_gQ]https://www.youtube.com/watch?v=Hyr84QG7_gQ[/video]