A liquid dispensing apparatus includes a tank that includes an opening configured to receive a liquid. The apparatus includes a dispense valve configured to dispense the liquid. The apparatus further includes a touchpad input device configured to receive an input from a user and a liquid dispensing controller configured to determine a dispense rate for dispensing the liquid based on the input received from the user. The apparatus, via the dispense valve, is configured to dispense the liquid at a first dispense rate for a first period of time when a level of the liquid in the tank falls below a first tank level to dispense a first amount of the liquid and to dispense the liquid at a second, different dispense rate for a second period of time when the level of the liquid falls below a second tank level to dispense the first amount of the liquid.
