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Care of Fish
Freshwater Aquariums
Goldfish

The weight of a 100 gallon fish tank?

Answer

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Wiki User
October 01, 2009 3:37AM

1 gallon US weighs about 8.35 lbs. So 100 Gals US weighs 835 lbs approx. Then there is the weight of the tank, top glass and the gravel and the (decorative) rocks, the lights, filter etc and don't forget the stand too. You would need to allow for well over 1000 lbs for a fully set up 100 gal aquarium.