DIY Plastic Mesh Tunnel
Make a tunnel to train your fish to swim through! Cut a piece of plastic sewing canvas to the size needed for the tunnel. Rub sandpaper or a nail file over the cut edges to ensure they are smooth. Fold the ends of the tunnel together and use zip ties to hold the ends in place. Attach clip suction cup on the side of the tunnel and attach the suction cup to the wall of your betta’s tank.