until then:
before I had a controller I simply used one of those mechanical timers with the little green and red pieces that click it on and off.
Only I didn't use any of the red pieces that click it off -just green pieces.
I spaced them all 2 or 3 hours apart.
That way I just switched the pump off by hand (the timer has a wheel thing on top to turn it on/off manually) and if I forgot to turn it back on it would automatically hit a green piece a couple of hours later and turn the power to the pump back on.

Just a thought...