Mattcomptonassvanhorn;1055780; said:
Magnum 350s are money in the bank. They have never failed me.
Mag350s are great filters and great for polishing, in fact I run them on my tanks....but IME...
If you're running the micron cartridge on them and don't change it out regularly they start producing nitrates BAD, they get clogged and lose their flow, and they're tricky to breakdown and get up and running again.
Best overall if you keep up on maintaining it, IMO - Mag350
Easiest to break down and clean and still polishes well - Rena xp series.
I think easy is important 'cause then you're less likely to slack on maintanance long enough that you end up with nitrate problems or a clogged filter. (They're hard to clog anyway, I've yet to have it happen on one)
So I say if you have experience breaking down magnum filters and you're for sure you'll break them down and change the cartridge on a regular basis then run that.
If you want something that's easy to break down and maintain and will still do a good job go with a rena xp series.
Fluvals I personally stay away from since me and others have had problems with the seals being bad, them leaking, or just plain low flow rate.