# Torricelli's Law and the Continuity Equation: why is volume flow rate allowed to increase if we change the area of the exit hole?

Bernoulli's equation + Torricelli's law: does the speed of the fluid change if we change the area of the hole but not the height?

I now understand: in summary, the velocity at the exit hole v2 stays the same according to Torricelli's Law, the cross sectional area of the top of the container A1 stays the same, so an increase in the area A2 of the exit hole would lead to an increase in the velocity v1 at the top of the water. Because the exit hole area increases but exit velocity stays the same, the volume flow rate increases.

Here is the continuity equation:

$$A_1v_1 = A_2v_2\iff v_1 = \frac{A_2}{A_1}\cdot v_2$$

What I don't understand is this: I get why the volume flow rate increases, but is it allowed to? Don't the continuity equation and conservation of mass in fluids state that the volume flow rate of a fluid through the same container must stay constant? Or, to be concise, $Av = \textrm{constant}$?