How can I calculate the glass thickness for any size of tanks? I would like to understand how people are able to calulate what thickness of glass we would need. The bigger the tank is, the thicker the glass needs to be I know that for sure. Is there any special formula for it? :bowing: I'm playing around with the idea of having ~200 gal tank that would house oscars, green or red terrors, jack dempsy and a royal pleco.