That depends on what the tank is made of, and what it is filled with.
If it were made from Aluminum it would be very light, say 10 pounds; if Glass it would weigh around 350 pounds;, however if it were made from solid neutronium it would weigh a few hundred bazillion mega-tons.
If it was filled with air, it would be weigh no more than its own weight; with water it would add around 1,250 pounds; with Mercury it would weigh about 16,950 pounds.
So if it were say a 150 gallon fish tank, full of water and assorted fish & things, it would ring in around 1,800 pounds total.
72 US gallons weighs about 601.2 pounds.
Around 600 pounds ... It depends on the type of water ... just round it up to 600 :)
130 US gallons is about 1,085.5 pounds.
A gallon of water weighs about 8.35 lbs. so 37 x 8.35 = 308.95 lbs.
525 US gallons of water weighs about 4,378.5 pounds or 2,189.25 short tons. Each US gallon of water weighs approximately 8.34 pounds.
11,000 gallons of water weigh approximately 91,760 pounds.
350
344.4 pounds for 41.269 gallons of plain water.
200 gallons of water would weigh approximately 1,667 pounds.
15000
15000
1.4212 gallons of water weighs about 12 (11.86702) pounds.
3,740 US gallons of water weighs about 31,229 pounds.
212 gallons of water weighs 1,770.2 pounds.
20.4 US gallons is about 170.34 pounds.
15000 gallons
125 pounds.