So I'm getting closer to starting my 50g build and am in the process of planning out (and hopefully building my sump). So my cabinet which I'll be putting this in is 26"x15"x30" so I'm currently planning on building my sump with a 20g (24"x12"x16") tank. My plan to to use the extra space in the cabinet for my ATO reservoir and any dosing containers. I'm not sure how exactly I'll mount this stuff, but for now I want to try to nail down my sump design. Here is what I was thinking so far: Basically I'd be running a Herbie drain from the display tank and have it feeding the skimmer chamber. I'd then split off the return so that I could have 100% control over how much flow my refugium gets. I'm not worried too much about the fuge water being post-skim since I don't plan on running a skimmer that will have a higher skim rate than my return pump is running at. Anyway thoughts on this plan?