HYDRO-STONE¨ Gypsum Cement is one of the hardest and strongest HYDROCAL Brand products. HYDRO-STONE is recommended for producing high-quality novelty and statuary castings requiring extremely hard surfaces.
Hydrostone is hard and strong. It is ideal for creating cast formicaria because of its strength and expansion.
Roughly 100g (0.1kg) is needed to floor a 10cm x 10cm x 10cm outworld and roughly 500g (0.5kg) is needed to create a 10cm x 10cm x 5cm formicarium