Aeroponics Bilge pump

I was wondering if a bilge pump would work fine for an aeroponics system or would the pump burn out?

bump* does anyone have any experience with this ^ ?

iv been looking at some of these pumps http://www.shurflo.com/

...the requirements of a pump, I have been told, is that it needs to be oilless.

What about this pump is moves 6.8 gpm @ 9 ft head and a max psi of 30.

http://secure2.data-comm.com/servlet/DCIS/-strse-354343/Pump-Magnetic-Drive/Detail

and heres a small one....

http://secure2.data-comm.com/servlet/DCIS/-strse-354083/Pump-Magnetic-Drive/Detail

thats way to expensive man, go to the hydro store

no stores around here for 200 miles, get most of my stuff from HTGS, or BGH, but they dont have the high pressure pumps im looking for. i have an eco 1500 gph 13 ft of head x 12 / by 27 is only 5.7 psi running 3 4.5 gph spray jets and thats not near enough as it only tends to just make a strem and not really a spray or mist.