I recently used PP board (non-PVC board) to do a turtle pool, but in the paste when found with hot melt adhesive anyway will be leaking, has been repeated several times, but also with the screw
Joint with glass glue, or with tin foil paste the place where the leakage and then bonding
Glass glue, is a commonly used adhesive in the family, the main component of sodium silicate (Na2O · mSiO2), soluble in water, sticky, the South also known as water glass, the North also known as violet. Is a variety of glass and other substrates for bonding and sealing materials
Aluminum foil, commonly known as foil, aluminum foil, etc., is a flattened metal aluminum manufacturing tools, mainly for kitchen cooking, containing food, or used to make some simple and clean materials. Thousands of tons of aluminum foil are used throughout the world for the protection and packaging of food, cosmetics and chemicals. Most of the aluminum foil is bright and the other side is gray and dumb. Food with aluminum foil can be wrapped in both sides of food, usually recommended to bright side wrapped, enhance the heat conduction effect.