The mass of a fish tank should be measured in kilograms.
Degrees Centigrade.
A heater can raise the temperature of a fish tank if needed
no because if its a freshwater tank the rain has salt in it
What do you use to find mass
depends on the size of the fish, there might not be enough oxigen in a small fish tank.
most fish tanks are measured in gallons unless it is more of a small fish bowl instead
The simple answer is yes.
Of course you can.
It will either have to get used to it or die.
no
No