There are these 3d printed feeding hatches. I’m sure there are better ones and I’m sure someone here can print them for you.How did you do it?
Eric used a saw to cut the frame and we used 90 degree attachments that it came with to make a square cut out. Kinda janky but it works. I still would want a custom polycarbonate lid in the future to block less light in the center of my tank but they're pricey.How did you do it?