lifeform,
If it is anything like the G1X that I bought, there are no instructions at all, just 1 piece of paper that shows the parts on one side and picture (diagram) of the skimmer on the other. It only shows that the output pipe be raised to the level of the bottom of the cup to initially start it.
This thing is frustrating me to no end with all of the microbubbles that it is putting into my tank.
I tried calling the manufacturer directly, just to ask them about how deep the water depth in the sump should be, but they would not even talk to me and told me to ask the vendor that I purchased it from.
Sorry if I sound a bit gruff, but, as I said, it is frustrating me.
HTH and good luck.
