For a corner tank setup, you've got some solid options to fill that top space. Since you mentioned the new plants are on the shorter side, you could look for some taller plastic stems or plants to anchor in the back corners - those draw the eye upward and make the whole tank feel fuller. Your drooping plant idea is great too, especially if you can find some nice trailing pieces that cascade down from the top edges. That's a really natural look and definitely solves the bare top problem. You could also consider mixing in some taller plastic decorations or structures alongside the plants - things like tall driftwood-look pieces or rock formations in the corners add height without eating up much floor space. The key is layering: shorter plants in front, taller elements toward the back, and the drooping stuff cascading down from the sides. That creates nice depth and draws the eye around the tank instead of leaving it looking empty at the top. What kind of plastic plants did you end up grabbing? If they're mostly mid-height stem plants, you might want to grab one or two really tall pieces to use as focal points, then arrange the shorter stuff around them. Also depends a bit on tank height, but generally creating vertical elements in the corners and back really helps break up that bare top feeling you're worried about.
