Uh-huh ^~^ It certainly won't be as pretty as making a normal DIY rectangular one, though. I've also never seen dividers for curved tanks.
Supplies I used:
-
100% Silicone ( An absolute must if you use silicone!)
- Report binder bars
- Mesh
-A sharp blade
-Ruler
-Paper
-Marker
Try to keep the binder bars, silicone, and mesh the same color. It looks much prettier!
Steps
1: Measure how high and wide the divider will be with your ruler
* Make sure your are in the middle of your tank. And continuously work with the center of your tank. Otherwise measurements will be all goofy while making it :c
2: Cut that vague shape out of paper with your knife
*Recommended to make multiple cut outs
3: Cut the mesh to match the paper cut out and put it aside
4: Take the paper and now go back and forth between tank and knife while meticulously snipping one of the sides to match the curved front. (See why I mentioned TONS of cut outs?

Or at least, I needed them. I screwed up tons.)
* You should be able to turn piece to fit in perfectly once you're done.
5: Now cut the mesh to match the paper by laying the paper on top of the mesh and marking where you want to cut with the marker
6: Take one of your binder bars and place one on each flat edge of the mesh. You should end up with 3. This is for stability.
7: Cut the binder bars length to fit the mesh properly.Think of it as a picture frame.
8: Lastly glue two of the binder bars on the portions that will be on the side and bottom of the tank. Then make dots about the size of a pencil eraser on the mesh bend that does not have a binder bar on it- this is just to aid keeping it in place.