I needed a carbon filter and bought a 2 pack at an auction for $4! Quite a gloat.
Included in the lot were 3 new $40 filter housings. I suppose I could unload them on eBay, but I wonder if I could install them in parallel. I get my water from a well and having two filters across the line doesn't do much for the pressure. I wonder if I put several filters in parallel (keeping a coarse and fine "group" in series) it would improve the output. Or am I overestimating the resistance the filter put on the water flow? Thanks.