+1, One of the main pros for external is a case of being able to accommodate a lot more media.External! All pros no cons
Budget.....Fluval 305
Elite......Ehiem
pain to start up... loud, always annoying airbubbles, need i say more? sure, power filters are smaller but theyre much cheaper, even tho i would recommend an external for 200l, if not an emporer 400 or one of the large aquaclears.External! All pros no cons
Budget.....Fluval 305
Elite......Ehiem