(just a little info I found on another site, could be useful to someone
)
Do you have a used aquarium that you don't have size information for? Or perhaps you want to know how much your tank will weigh once it's filled with water. This chart is just what you need. It provides size and weight information for many of the basic aquarium sizes.
Basic Aquarium Sizes (US Units of Weight & Measure)
Note: Weights are for glass aquariums, acrylic will weigh less
SMALL AQUARIUMS
(not recommended for beginngers)
Tank Size L x W x H Filled Weight
2 1/2 gallon 12" x 6" x 8" 27 lbs
5 gallon 16" x 8" x 10" 62 lbs
10 gallon "Leader" 20" x 10" x 12" 111 lbs
15 gallon 24" x 12" x 12" 170 lbs
15 gallon High 20" x 10" x 18" 170 lbs
MID-SIZED AQUARIUMS
Tank Size L x W x H Filled Weight
20 gallon High 24" x 12" x 16" 225 lbs
20 gallon Long 30" x 12" x 12" 225 lbs
25 gallon 24" x 12" x 20" 282 lbs
29 gallon 30" x 12" x 18" 330 lbs
30 gallon Breeder 36" x 18" x 12" 348 lbs
40 gallon Breeder 36" x 18" x 16" 458 lbs
40 gallon Long 48" x 12" x 16" 455 lbs
LARGE AQUARIUMS
Tank Size L x W x H Filled Weight
50 gallon 36" x 18" x 19" 600 lbs
55 gallon 48" x 13" x 21" 625 lbs
65 gallon 36" x 18" x 24" 772 lbs
75 gallon 48" x 18" x 21" 850 lbs
90 gallon 48" x 18" x 24" 1050 lbs
125 gallon 72" x 18" x 21" 1400 lbs
150 gallon 72" x 18" x 28" 1800 lbs
180 Gallon 72" x 24" x 25" 2100 lbs
All info was not written by me but was taken from here http://freshaquarium.about.com/od/aquariumsandstands/a/tanksizesweights.htm