I got the 220g version of the super skimmer on my tank. I have mixed feelings over it. First the intake has a plastic cone screen that NEEDS to be on it, if it's not then the thing will pull too much water in and venturi action won't occur. That screen can also get clogged with junk reducing the amount of flow and as a result the bubble level in the skimmer, so you need to keep ontop of making it clean.
Also I'm not sure about the design but it seems there's one outer shell and an inner shell, now there are zero bubbles in the outer area which makes me wonder what in the hell it's for.
Overall it's not a bad skimmer for the money, but if you want some serious skimming ability might want to look into a pricier brand (ASM, EuroReef, etc)