Remix from SteeveGLDev design. Made it compatible with a Biocube 32 as well as a generic 20gal RIMMED aquarium. Possibly will fit other rims on different aquariums. The Biocube remix fits in the center front of the aquarium and is positioned below the feed door. It allows the hood to be closed completely.

The file has some manifold errors but will still print just fine through Cura. I don't have the time or the desire to go back and fix them. ..none are observable when printed. Recommend you enable Support and .2mm maximum so that the ring will flow smoothly.