I have a suction side Hayward Naviagator that I'm thinking of converting to a pressure side Letro or Hayward Phantom. My question is, do the pressure cleaners send water to the filter, or just through the bag attached to the cleaning device itself? I'm thinking that the pressure cleaners would not clean fine dirt as well as the suction cleaner that was sending water through the DE filter. There must be more to this than I'm aware of, since most pool builders I've talked to only build pressure side pools.