Having been absent from keeping fish for the past 15 years, tech and options have vastly moved on. Contextually I used to run a 200l tropical aquarium with great success - fast forward 15 years & now with a 4yr old showing interest I purchased a small set up & remembered my past passion. My career allows me now to invest in something bespoke & as a result I have just commissioned a 200x65x35 (100g) closed top tank to fit on top of my wine rack. I’ve been exploring a number of options around filtration and was fortunate enough to pick up a cheap FX4. I also have a 206 to run alongside this if necessary. Primarily my intention is to find aesthetic solutions to the intake/outlet feed. I believe that the standard pipes provided with the FX4 are 24mm & I have seen a few threads referring to suggestions to resolve this issue, but I remain unclear how successful/sustainable these were. Secondary to this I am also struggling to find inline options for CO2 delivery and I would appreciate any pointers/suggestions for solutions. I’ve emailed fluval and they state that they don’t provide filtration inline solutions. They also suggest that inline CO2 is ineffective, which from my reading does not appear to be the case. Given my commitment to wanting to do things right from the offset I’d much prefer to get experiential advice to avoid future problems.