allright cool thanks for that clartfication
i have found an 5.5 gal/min (at 9 foot head) pump with in and out thread of 1/2" thread at the surplus center
pump
i think that one will work good for my needs, its a mag drive pump which means no direct shaft so less wear i would think
cathar: a question, will you still make the friday date for the "building or manfuacting" of the waterblock?