My reply was more directed toward hybridtheory.
Also, my reply was also stating that because the 2080 doesn't mechanically filter someones 125 gallon tank very good, doesn't mean it won't filter someone elses 125 gallon tank great.
Each tank will require certain media to perform the duties required. A 10-15ppi sponge is not going to get a lot of the smaller suspended particles that you can easily see. Its not that the filter is not sucking it up, its that those particles are either large ones that have been broken down into smaller pieces by turbulence through the entire filter system, or broken over the media, or just that they are to small.
This is regardless of the amount of flow. You can have 1000GPH but without the proper media, your just not going to be able to filter the suspended particles properly without the proper media.
This is the first time I have stood up for the 2080 since im such a Fx5 fan, but the truth has to come out infront of the junk at some point.