Are You sure it doesn't say, (It will Pump, up-to 6'). & are You sure You have the in & out of the flo of the pump?
With the pump that high from the res., It can't get a good Prime. Just use some Hose, & lower Your Pump to res. height or even underneath. Just for a experiment, to make sure the pump is strong enough to handle what You are after?? |