| | Re: Favorite Canister Filter for 55 Gallon Tank
Eheim classics offer better flow per unit of media capacity than their more expensive cousins do.
A 2215 kit w/ media & a Hydor in-line would be a great solution for a moderately planted 55. If you're really going to keep it stuffed, a 2217 upgrade would be in order.
If money is a constraint, I'd look at comparable ViaAqua filters, then Renas. If Hydors are out of budget, Visitherm Stealth all the way.