Hello, I have a pump going out from my ST to FT with a 3/4 inch pipe.  i have a syphon going out from the FT to a Swirl Filter and then on to the ST with a 1 1/2 pipe.  the issue is the water does not "flow" fast enough out of the FT into the ST.  The 1 1/2 inch pipe is hardly utilized to its full size. if I increase the flow of water into the FT by running another pump from the ST in an effort t…