My only complaint with my 302 was the pump failed to restart without giving the impelelr a spin with a screwdriver and it didnt have a ball valve control. I now use a reef octo int 200 with a sicce pump
I have had my 302 for i think 3 years now with Flawless results. I have never had a restart issue with mine. I did have a few microbubbles early on but I believe once it slimed up good, they went away. I only clean mine one a year or so and it kicks out some nasty funk. the venturi rarely clogs with salt creep like my old Reef Octopus did. I love mine.