I always say you can never over filter. On our 55g I'm running a UGF
and 2 Aqua-Tech 60g power filters. Also 2 power heads but that's not really filtering. Eventually I want a Fluval 405. On our 40 we have a Fluval 305 for 70gallons. On our 20L we have a UGF
and 2 Aqua-Tech 10g power filters. On our 14hex, UGF
and an Aqua Tech 20g. Our 29 we have a UGF
and an Aqua-Tech 30g.