hello i have a fluval 305 and want to upgrade my filter what is the best canister? is there one than can hold 5 gallons or more what one is best and why?
I would have to agree with Importracer. I really like the Rena XP series and would suggest getting XP3's. Cheaper than the 4's and the only difference is 1 less basket and a little less GPH, but hey, you will have 2 XP3's instead of 1 XP4 so the little less GPH of the XP3 won't matter. I also have an FX5 and i like the automatic shutoff to get air out of the system but for the price I would prefer 2 XP3's.
Is there a particular reason you want lots of gallons in a canister? The bigger the can the harder it is on your back to lift it out of the stand to clean.
-matt