Shirlie is a fish and also aquarium lover with 16 years of experience writing top top the topic of raising and keeping fish in ~ home.

You are watching: How much does a 55 gallon fish tank weigh full of water


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small Aquariums

Contrary come what you might think, tiny aquariums room not recommended because that beginners. These small environments can be very temperamental, so a tiny adjust in the chemistry that the water, prefer ammonia or pH changes, have the right to have a big impact.


If you execute decide to store a little fish tank, save in mind the it will have actually a lot smaller biofiltration capacity, so that is essential that you perform not overstock it v too numerous fish. Also, due to the fact that it is such a perceptible environment, good filtration is absolutely vital for small tanks.


Small AquariumsTank SizeL x W x HEmpty WeightFilled Weight2.5-gallon5-gallon10-gallon (leader)15-gallon15-gallon (high)
12" x 6" x 8"3 lbs.27 lbs.
16" x 8" x 10"7 lbs.62 lbs.
20" x 10" x 12"11 lbs.111 lbs.
24" x 12" x 12"21 lbs.170 lbs.
20" x 10" x 18"22 lbs.170 lbs.
Sizes and also weights the aquariums as much as 15 gallons

Mid-Sized Aquariums

These space the aquariums that are most frequently recommended for beginners. Anything in the 20- come 40- gallon variety has a adequate volume that will certainly minimize harmful effects as result of chemistry transforms in the water and will be large enough to manage a nice stock of fish.


Also, these tanks are not so large that cleaning will certainly be difficult. This is important since many world who are new to aquariums uncover that keeping up v maintenance shortly becomes overwhelming. Overall, the mid-sized tanks space a nice, controllable size.


Medium AquariumsTank SizeL x W x HEmpty WeightFilled Weight20-gallon (high)20-gallon (long)25-gallon29-gallon30-gallon (breeder)40-gallon (breeder)40-gallon (long)
24" x 12" x 16"25 lbs.225 lbs.
30" x 12" x 12"25 lbs.225 lbs.
24" x 12" x 20"32 lbs.282 lbs.
30" x 12" x 18"40 lbs.330 lbs.
36" x 18" x 12"48 lbs.348 lbs.
36" x 18" x 16"58 lbs.458 lbs.
48" x 12" x 16"55 lbs.455 lbs.
20 to 40 gallon capacity

big Aquariums

The bigger the aquarium, the much more fish you have the right to stock. That is a chose advantage, yet it also method that girlfriend will have to work harder to preserve these tanks. You additionally have come be involved with tanks of this size when it comes to weight once filled. You should make certain your floor and also cabinet can handle such hefty loads. Owners of very large tanks might even discover that floor combine is crucial to assistance a load that is in overabundance of one ton.


Bigger tanks have a great appeal, specifically when you desire to develop a varied aquarium. However, you additionally need to consider the tank's scale in relation to the room and also its surroundings. Is there sufficient room for hoses and also accessories in between the tank and also wall? Is the a high-traffic room? are there room constraints that can lead to accidents and damaged glass? execute you have shelves overhanging the tank the may fall down and also create an emergency for her fish? these are essential questions to ask before making together a far-ranging investment with your time and also money.


Large AquariumsTank SizeL x W x HEmpty WeightFilled Weight50-gallon55-gallon65-gallon75 gallon90-gallon125-gallon150-gallon180-gallon
36" x 18" x 19"100 lbs.600 lbs.
48" x 13" x 21"78 lbs.625 lbs.
36" x 18" x 24"126 lbs.772 lbs.
48" x 18" x 21"140 lbs.850 lbs.
48" x 18" x 24"160 lbs.1050 lbs.
72" x 18" x 21"206 lbs.1400 lbs.
72" x 18" x 28"308 lbs.1800 lbs.
72" x 24" x 25"338 lbs.2100 lbs.
50 gallons and larger sizes

Calculating weight of Custom-Shaped Tanks

In addition to basic rectangles, fish tanks might be in the form of hexagons, pentagons, or even cylinders. If you space buying together a tank, the volume in gallons will currently be specified and also you deserve to use the charts over to calculate the empty and full load of the tank. A 50-gallon fish tank will have the same weight dimensions whether the is rectangular, hexagonal, or cylindrical in shape.

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But if you space buying or have been provided a supplied tank and also do not know the gallon size, calculating the gallon volume and also weight the the tank is really simply a issue of very first calculating the cubic inch of volume. The an essential measure to know:


If you can determine the volume of any type of tank in cubic inches, then it is easy enough to analyze that right into a gallon capacity. As soon as you've figured out the gallon capacity, usage the charts above to calculation the empty and also full load of the tank.


To identify volume requires a little math. The volume that a tank is identified by an initial figuring out the area that the base form in square inches, climate multiplying this by the height. The easiest means to do this is to sketch out the form of the base, then division it right into shapes the have areas that can conveniently be calculated. For example, a hexagon deserve to be divided into rectangles and triangles. Calculation the area that each form in inches and also then add them together to figure the area of the tank's base shape. Multiply this number by the elevation of the tank to calculation the complete volume in cubic inches. Next, division the complete cubic-inch volume through 231 to find the gallon capacity of the tank. Finally, find a corresponding gallon capacity in the charts over to find the approximate weight for her tank.