
The only canister I've got is the Magnum 350 -- if they're similar, it should be cvery clear what order it goes in, both by the construction of the unit and the instructions. In my 350 (and in most HOBs I have) first pre-filter (mechanical filtration--filters out all the little particles so they don't mess up the rest of the filtration) then biological and/or chemical filtration (to deal with the ammonia -- bio-wheels or carbon or floss or micro-papers or whatever you prefer). Sorry we haven't answered -- I didn't because I'd never heard of an xp3:DOriginally posted by GMAN
I just ordered a canister xp3 and wassssss wondering what order to put media in it? I ordered all media available for extra.



So you think the Magnum is that much better than the little Renas?!?:D --:cool:Originally posted by GMAN
And stone a 350 mag isnt in the same class as an XP3:D


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