Pump/Res what do i need?

[Zebedi]

Hi i need help here ive started to buy some wc parts, i have 2x 240mm rads.
i plan to cool cpu memory and gpu.

I see pumps and res for sale but is that all i need?
so for example if i were to buy this pump 12V Alphacool Laing D5 Vario Pump VPP655 SINGLE [49092] from WCUK Online

and this res Alphacool Cape Fuzion Core 10 Acetal Black [45263] from WCUK Online

is that all i would need?