snakeskinner said:most any tank over 150 is acrylic. if it were glass, it'd have to be over 1/2" I'd think. Kyle
Boohoo said:So what are the measurements of your 210, Raskolnikov?
slipknottin said:You can use garf's custom tank calculator to give you the recommended thickness of glass. http://www.garf.org/tank/buildtank.asp
A 180 is 72x24x24, so they are usually built with 3/8".