i just got a 210 gal tank in. starting to set up about next week.
and im debating wat i should run it with. has anyone ever used the fluval Fx5's?
its either that or 2 Rena Xp4's and suggestions?
and im debating wat i should run it with. has anyone ever used the fluval Fx5's?
its either that or 2 Rena Xp4's and suggestions?

Congrats on the new tank!! Guess it depends on a couple of things. Is it pre-drilled? If yes, then sump would be the way to go. How deep are your pockets? Eheim has the Pro III, 2260, 2250, Fluval has the FX5, Rena Filstar has the XP4 or maybe one of the modular canister set-ups from Ocean Clear, Nu Clear, Lifegard ect. Are we going 'bigboy fish' ? Fresh or salt? Full house or just a few w/ a lot of rm. to roam? The answers to these & other ques. will dictate which & how much filtration. Don't have personal exp. w/ FX5 but my downstairs neighbor says she loves it on her 175gl. If the XP4 follows in the footsteps of the XP3 (I have) you should do well. Eheim has always been just out of my reach but most accounts rate them very well. Maybe others can give more first hand exp. Good Luck, "T"