In the table below, the top row indicates the length of the tank, the left vertical column indicates the depth (height) of the tank. To determine the glass thickness to use for constructing your tank, find the length of the tank in the top row (indicated in feet and cm - centimeters), then follow that column down until you reach the height of the tank (indicated in inches and cm). Glass thickness is indicated in mm (millimeters), with the number in parenthesis below indicating the Safety Factor.
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2'
62cm
3'
92cm
4'
122cm
5'
152mm
6'
183cm
7'
213cm
8'
244cm
15"
40cm
6mm
(3.38)
6mm
(3.09)
6mm
(2.92)
6mm
(2.92)
6mm
(2.92)
6mm
(2.92)
6mm
(2.92)
18"
46cm
6mm
(2.91)
9mm
(6.56)
6mm
(2.37)
9mm
(5.33)
6mm
(2.05)
9mm
(4.61)
6mm
(2.05)
9mm
(4.61)
6mm
(2.05)
9mm
(4.61)
6mm
(2.05)
9mm
(4.61)
6mm
(2.05)
9mm
(4.61)
21"
53cm
6mm
(1.79)
9mm
(4.01)
6mm
(1.79)
9mm
(3.26)
9mm
(2.98)
12mm
(5.30)
9mm
(2.82)
12mm
(5.02)
9mm
(2.82)
12mm
(5.02)
9mm
(2.82)
12mm
(5.02)
9mm
(2.82)
12mm
(5.02)
24"
61cm
6mm
(2.0)
9mm
(4.5)
9mm
(2.76)
12mm
(4.92)
9mm
(2.25)
12mm
(4.0)
9mm
(2.05)
12mm
(3.45)
9mm
(1.95)
12mm
(3.46)
9mm
(1.95)
12mm
(3.46)
9mm
(1.95)
12mm
(3.46)
27"
69cm
9mm
(2.96)
12mm
(5.26)
12mm
(3.24)
12mm
(5.26)
12mm
(2.63)
16mm
(4.67)
12mm
(2.40)
16mm
(4.27)
12mm
(2.27)
16mm
(4.04)
12mm
(2.27)
16mm
(4.04)
12mm
(2.27)
16mm
(4.04)
30"
76cm
9mm
(2.30)
12mm
(4.06)
12mm
(2.42)
16mm
(4.30)
12mm
(1.97)
16mm
(3.50)
12mm
(1.97)
16mm
(3.50)
12mm
(1.80)
16mm
(3.20)
16mm
(3.00)
16mm
(3.00)
33"
84cm
12mm
(2.91)
16mm
(5.18)
12mm
(1.79)
16mm
(3.19)
16mm
(3.19)
20mm
(4.98)
16mm
(2.59)
20mm
(4.04)
16mm
(2.37)
20mm
(3.70)
16mm
(2.24)
20mm
(3.50)
16mm
(2.24)
20mm
(3.50)
36"
92cm
12mm
(2.22)
16mm
(3.95)
12mm
(2.21)
16mm
(3.95)
16mm
(2.42)
20mm
(3.79)
16mm
(1.97)
20mm
(3.08)
16mm
(1.97)
20mm
(3.08)
20mm
(2.81)
20mm
(2.67)
e
Disclaimer
Notification: The information provided in
this calcuation chart was compiled in reference to Warren Stillwell's article
posted on the Federation of New Zealand Aquatic Societies, Inc. Web site.
It is only intended as a guide, and we, Debbie and Stan Hauter, nor About.com
are responsible for any problems that may arise from glass manufacturing
defects, construction faults, or any other factors.
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