How do you like the vortech cages?
i like them a lot. Even though my nems don’t move, just peace of mind. Bonus is that the larger pieces of food get trapped, which my flasher wrasse likes hovering around in high flow and picking off pieces. You have to keep them clean, I use hot water and hard tooth brush. Don’t use vinegar, they go brittle.
I 3d printed mine. The version on thingiverse is a perfect fit.