These look a little expensive perhaps for what I need, but thank you for the suggestion!
BrownOut:
I have tried your idea of chaining the 555s and it would work but there is a problem, the input on pin 2 needs to go low after going high for pin 3 to go low after the given timeframe. When the float switch turns on it will remain on indefinately (basically until the relay is triggered, which will release water and cause the float to move, thereby deactivating the float switch) and acts as a single pole, single throw switch as apposed to a push switch. Therefore I will need to make pin 2 of the first 555 go low when the float switch is active and then go high again shortly after to prevent pin 3 being high indefinately. I hope that make sense!
I am thinking perhaps it would be better to use an astable and a counting circuit now....