Yep, it is a 5.5. I had intended on using a 10g, and even bought one at a $1 a gallon sale, but got home and it wouldn't come close to fitting in my stand. I had always assumed I would have plenty of room in the stand for it, and never thought to bother measuring. Sadly even the 5.5 needs to sit in there at a slight angle... I just WAY over built the stand. [smilie=crying.gif]
The Aquatic Life Skimmer works well, but it is small. There is enough room in the skimmer section of my sump to upgrade to a Tunze Nano Skimmer, but I didn't start with that because I was trying to keep this somewhat of a low budget build. Given that the tank will not be heavily stocked, I am going to try and stick it out with the Aquaticlife for now. After buying the AquaticLife, I came across the even cheaper Reef Octopus NS80. if I had seen that before, i might have gone with it.