well it looks like i'm due for a cleaning. I'm not running the skimmer at the moment. anyhow, after looking at the picture I just realized there is a major downside to the backpack which I didn't remember til now. The water level is difficult to maintain because it's such a small chamber. You would need an auto top off. I keep a 5 gallon bucket under the stand for this. the pressure sensor is on the left. You probably don't want to do this and unless your house has 95% humidity otherwise you would probably need to add water ever day. This is too high maintainence. It might be ok if you have a glass cover over your tank. I keep mine open. I guess I at least helped you rule out the backpack.