suction pipe length for sump motor

Dear Sir,

I  am getting one more additional water storage sump tank constructed in the portico area  for storing about 7500 ltrs of water. I am using existing sump (3000 ltrs) motor of 1/2 hp to pump water.

I intend to  replace the 1/2 HP Suguna pump motor with 1 hp motor and use the same for pumping water from both tanks but one at a time. I wanted to know whether the motor  can  pump water from the addln tank if the suction pipe length is 40 ft. The existing pump is nearer to existing tank(suction 10 ft).What is the max pipe length  a motor supports for good suction nad discharge ? Pl clarify thro return e mail  mnathks@gmail.com

Thanks

from

k s manjunatha