Power Supply for Watercooling

Im considering watercooling but there is still only a small chance of me going through with it. I was wondering how much of a power supply you would need with the watercooling system running the pump and the two 120mm fans (compared to the CPU fan and a bunch of case fans). I know this is a powersupply question but I figured you guys in this forum would know best. Thanks

The pump doesn't run off the PSU, it plugs into the wall.

~THT

yup...so any good power supply will work

Actually you could even leave the PSU off the list and the WaterCooling will still be great and work fine