Some aquariums have tanks that hold hundreds of thousands of gallons of water. What material is used for the glass?

Zbeckabee

Transparent glass substitute -- PMMA Acrylic glass is commonly used for constructing residential and commercial aquariums. Designers started building big aquariums when poly(methyl methacrylate) could be used. The spectacular size of both flat panels and tunnels in aquariums such as Monterey Bay, Tokyo Sea Life Park, Osaka, Nagoya, Georgia and Dubai Aquariums were made possible with the introduction of acrylic. http://en.wikipedia.org/wiki/Poly(methyl_methacrylate) Commercial tanks are made of heavier cast acrylic. They are meant to be used in public places such as zoos, nature centers, restaurants, and business establishments open to the public. They can be used in homes but are heavier built than usual. http://www.glasscages.com/?sAction=ViewCat&lCatID=64 This discusses the various materials and construction principles: http://www.austinglass.com.au/aquariums.html Jul 26 10, 6:59 AM