When you make your beads, put a bead the same thickness (or thicker) as in your tank on a sandwich bag and lay the sandwich bag into the tank.
BEFORE you fill the tank back up.... use a razor blade to cut into the bead on the bag. It will give you a good measure of how well cured the beads on the glass are.
BEFORE you fill the tank back up.... use a razor blade to cut into the bead on the bag. It will give you a good measure of how well cured the beads on the glass are.