Review on Pentek DGD 2501 20 Polypropylene Filter Cartridge by Tim Harrington

Ideal for 20 inch blue filter element. Keep a few spare O-rings handy as they will lose their shape and leak after a while. I installed it in the piping that runs from my well into the house, between the well and the pressure vessel. Especially in front of a water treatment system designed to reduce buildup in my water. Also, I'm tired of cleaning the aerators on my faucets. I know the filter works immediately because there are no more particles in my water. A strange side effect is brown or blackish streaks on the toilets where water from the tank flows along the edge of the toilet. This happened in my previous home where I had installed a filtration system into the existing water system. It cleared up after a few months and I expect it to happen with this tie too. Is it because the water is clearer and the lines are clearer? I'm not sure, but since this happened with the previous property, it leads me to believe this filter is doing the job.