I have another post about problems that I'm having, but while searching around, I'm starting to ask myself if it is even a good idea to have a Pentair 4x16 setup to provide the means for the Polaris 380 to do it's thing? I guess I've never really fully understood this or didn't really pay much attention, but the the Polaris 380 calls for a booster pump. I always assumed that thie Pentair 4x160 would be more than adequate (really overkill) and better than a booster pump, and it's seemed to always work good, however, I've always felt like I had to set the pump at a higher flow rate just to make the cleaner work right than I felt like I should have, and I've always felt like it was having to work too hard just to make the cleaner work. Now, as I understand it, the booster pump and the Pentair 4x160 are totally different design and have different intended purposes. Can anyone please help enlighten me?