My sensor is reading 187 gph on my the main return line of my return plumbing. The Sicce Synchra 4.0 return pump is rated at 951 gph and has a manifold connected, branching off of return plumbing but it only runs a carbon reactor now which is just a trickle going through it. I can put my hand on the output pipe of the return in the DT and it seems to be pushing about three times the reading. When the loc-line is pointed down it blows sand all over. Could I be getting a head loss of 764 gph? I have another 1/2" flow sensor but am somewhat reluctant to swap it out because it would be a PIA. Could the sensor be only partially clogged?
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