I have a couple of fishtanks; a 100 gal. long with a 350 mag. filter, the other is a 110 gal. with a trickle filter system using bio balls. I eventually want to replace the 350 mag with another filter. it is about 15 yrs. old, and I was just wondering what other people had as their own personal preferances. To me, I am not crazy about the 350 mag. when it comes time for filter maintanance. It is a pain in the --- when it come to putting it back together after cleaning. Lately, I have had trouble with the tubes being air locked. Is there a filter that does as good a job as the 350 mag, but not as much as a pain when it comes to maintanance?