DIY Algae Scraper

Make an algae scraper to keep your aquarium glass clean! Take apart two pens. Cut off the top and tail of a pen cap. Insert one empty pen case half-way into the pen cap and hot glue the pen in place, then repeat to glue the second pen casing into the other end of the pen cap. Hold a razor blade against the tip of the pen stick at about a 45 degree angle and use hot glue to attach the blade in place.