^^^^I'm not sure what your trying to prove here, I see you post about the Magnums quite a bit, I get that you REALLY like them

and I agree that the mechanical filtering of the Mag is outstanding but it cannot hold a candle to the quality of Eheim cans, I own both and I can tell the difference. The Mag is an excellent "quick polish" filter but I would not run this on a tank by itself without the bio-wheel. I don't run bio-wheels because I inject co2, therefore I needed a nice can that I can run mech and bio without the worry. I'm glad I went with Eheim the quality is unmatched, even the ecco line is high quality IMO.I have had a bunch of different cans Fluval, Jebo,Marineland C and nothing comes close to Eheim IMO. I used to clean my Mag 350 every two to three weeks! and forget the polishing cylinder, it does a great job but can only be used a few day's. I get 6-8 months of filtering on my heavily planted tank before I have to clean my Eheims. Just my 2 cents