I was going to upgrade my filtration system to a Fluval 404, but I called Big Al's Online to see why the Eheim was roughly $100 more. This is basically what they had to say:
The only thing fluval has over Eheim would be the simplicity of cleaning. Its just easier to clean then the Eheim.
Eheim is far superior in biological filtration and will last as long as your tank will if not more. The only part he has really sold for the Eheim was a prop shaft because the person broke it while cleaning it. He also said you WILL replace parts on the Fluval roughly once a year. They just do not hold up againt Eheim filters. Its really worth the extra money up front in the long run.
So, I would like to hear from people who use or have used one or both of these filters. Give us the part number, and the pro's and con's of the system.
Thank you,
-S42K



