When constructing an aquarium glass tank, the aquarium hobbyist may choose between two types of glass to make from: Float or Crystal Glass.
Clear Float Glass is made of molten glass which flows through tweel to tin bath and then to lehr. While floating through the molten tin, the glass under the works of gravity and surface tension becomes smooth and flat on both sides.
Ultra clear float glass/low iron glass is also named Crystal Clear Glass, for they have higher light transmittance (91%) and transparency.
Can you note the difference between the two types of glasses laid side by side while viewed from the side of the glass panel? While Crystal Glass is crystal clear and nice to look at, it comes with a high price tag which may cause the amateur hobbyists to settle for the cheaper Float Glass made aquarium.
Click pictures below to enlarge:
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