keep an eye on things though...you may want to invest in another filter at some stage to increase water purity and also as a back up in case your 3+ goes kaputt for any reason.
i currently only have a fluval 203 external canister for my 30 gallon. its doing a good job (water is crystal ) but am gonna get mself a 3+ aswell in the next couple of weeks for the reasons mentioned above.
yep Fluval are good filters i have the Fluval 2 running in my 2 ft tank i'm contempting another Fluval 2 as my readings for water chemistry are up and down. Think it's the filteration system letting me down.