This probably wont completely replace the little vintage bakelite tanks I use, because they are great for doing 1 or 2 plates (the smallest takes just under 150ml of developer). But if there are too many the liquid doesn't get around properly.
The zebra tank will take 6 sixth plates, 6 4x5 sheets, or 3 4x5 plates. takes 450ml to fill, but I reckon I can do one plate at a time if I lay it sideways (with 200ml).