
I replaced the external filter on the Aqueon 45 with this internal filter. It was a gamble but my 29 gallon tank is fine and the fish seem happy. Reason for the change. We moved the tank and the external filter vibrated against our bedroom wall, making it louder than usual. This inner 40 is silent. Indeed. We could lengthen the exhaust pipe to make it make gurgling noises, but I decided to just leave it submerged. To clean, I have to reach into the tank and pull out to clean. More work than the exterior, but I'm willing to do it as the noise trade-off is worth the extra effort.

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