I can understand why you're sensitive to "weak filtration" references, with your 2x turnover rate. I'm glad it works for you and your lightly stocked tank. But the way you talk about high flow systems makes me question whether you have any experience with them. All of my tanks are high flow, sans carbon, and none of them smell, none of them are cloudy, and none of them have any discoloration. Furthermore, those are not problems that I've ever seen people with such set ups complain about. In fact, it's quite the opposite - those are all problems that ive seen people with weak filtration systems complain about. But don't take my word for it - there are countless forums out there full of successful, experienced fish keepers that advocate high flow setups. I'm glad you've stopped calling it a myth though, and identify it for what it is - your opinion.