Yes. Pumps are more sensitive to the negative pressure of an intake line
than the positive pressure from the outgo line. Short lengths of pipe will
have minimal effect. Larger intake lines will reduce the flow restriction
and minimize the effect. My external pumps all have pipe going from the
pond to the pump, with the minimum distance being about 20 feet.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html

"AAALarry" wrote in message
news:WyYbd.397455$Fg5.100918@attbi_s53...
will putting a hose on the intake of my pump decrease the flow rate?