Review on Highly Compatible 4 Block Activated Carbon 5 Micron Water Filters - Ideal for WFPFC8002, WFPFC9001, WHCF-WHWC, WHEF-WHWC, FXWTC, SCWH-5 by Kristi Hovde

Only filters that suppress the sulphur/rotten egg smell. We have such bad sulphurous water that I change the filter every ten days to keep it from smelling. I don't want to install a chlorine injection system so it's working for now. You have come at a great cost to me for going through so much brimstone. They don't blacken my sink or toilet, which is great. I also love having them in two days. I've tried probably ten different types and brands over the past year and I'm sticking with these because they work the best for the price.