I've just completed a pool pad renovation and am thinking that I might bight the bullet and add a SWG vs. wait until next summer. I now have a Pentaire VS pump and a Pentaire cart. filter. The models I have looked at online appear to call for installations with no bypass. I hate to reduce flow by running all the water from my 2 inch line through the SWG all the time, is this a valid concern? I'd like to know which models restrict flow the least, also if it is acceptable to run them off a bypass so that a portion of the water goes through the SWG and a portion go through 2 in PVC? My pool is 29k gallons, in-ground, vinyl. Recommendations appreciated.