How can I measure the amount of water my aquarium will hold?

as one answer said divide footage by 231 BUT EQUALLY IMPORTANT IS HOW STRONG IS YOUR FLOOR WHERE YOU INSTALL THIS SUPER HEAVY TANK??? If your floor isn't very strong your tank may self destruct when the weight hits 'critical mass"and it crashes through the floor destroying it and damaging your home.Figure out the weight of this tank when full and consult a building contractor to see if you have a disaster in the making on your hands!

Length X width X height ( all measured in inches) and divide by 231 gives you the gallons. For such a large tank, measure the INSIDE not the outside to know the true gallonage.

MM

Aquarium Tank Length Width Height

2.5 Gallons

9.4 Liters 12 in

30.48 cm 6 in

15.24 cm 8 in

20.32 cm

this is just a sample of what the link below has in their size/gallon tank chart.

Well six feet long is a HUGE tank. This is what you'll have to do since you don't know the capacity. You need to fill it and keep rack of how much water you add. So I would use a five gallon bucket/ 1 gallon, whatever you have. Just keep a tally sheet by the tank for every time you add water. Then you can figure you're chemicals based on that.

Hi Starlicious-whatever the other 2 measurements of your new tank are ( & with the last answer also in mind) at 6 feet in length it's going to weigh an immense amount when full so you might find the link below of some interest.

You can add water gallon by gallon with a milk jug.

Or if you're mathematically inclined you can calculate the volume by the dimensions. (length x width x height)

1 cubic foot = 7.48 gallons

you need to measure the length, width, and hieght.

their are plenty of sites that you can do it.

my favorite is http://www.fishprofiles.com/ and go to interactive, then calculator

There u plug in the info and it will give you thegallons.

give length width and hieght and you can get an answer