Flipper works great, way better than a mag float. It utilizes a stainless steel blade or scrubber. I wouldn't leave it in the tank though. In simple terms, stainless steel works by oxygen creating a protective barrier. When stainless is submerged it can not create the protective barrier and will rust. Also, I highly doubt CoralVue is using a quality stainless steel as I believe these are sourced from China.