well 4 quarts is one gallon, and he has 5 gallons to fill. 4 x 5 is 20, so he will have to fill it 20 times.
2 I think.
As there are 1000 ml in a litre, 20 litres equal 20,000 ml, dividing this figure by 250 equals 80 which is the number of times the glass would have to be used to fill the aquarium.
Assuming the only thing in the aquarium is water, this tank could hold up to 19.8 gallons of water.
You fill it as high as you can with the occupants and equipment you have. Some fish are more apt to jump than others if you do not have a aquarium top.
Gallons.
40 gallons is 320 pints.
About 10 gallons.
Provided the tank does not leak and it has been thoroughly cleaned there is no reason why it should not be suitable for keeping fish in.
Decoration, fill it with different colored rocks pretty looking crystals and so on. It looks great.
24.0 kg of water
The worlds largest aquarium is The Georgia Aquarium.