So I am thinking I want to get the Tunze 3155 osmolator 3 , but I have a question for anyone who has one. My tank is a rimmed Aqueon. Will it work on a rimmed tank. I like to keep my water level close to top so you don’t see it behind the rim. I can trim the inside of the rim if needed. I just need to make sure it will work before I spend $230..
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