I would like to build a fairly aggressive whole house water filter system.
However, the 1 micron filters that I see are low flow and are for point-of-use (under the counter for a drinking spigot) and are not appropriate for the flow an entire house needs.
I do, however, see many 5 micron filters that have sufficient flow.
If I cascade two or three 5 micron filters together, do they have an effective filtration that is actually smaller than 5 micron ?
Further, do two filters with the same flow rate maintain that same flow rate regardless of how many filters are in line ? I realize there might be a non-zero reduction in flow just because of the additional couplings, but I am hopeful that two or three filters, in line, with the same flow rate, maintains roughly that same flow rate.
Am I correct that I can get an effective 2 or 3 micron system with, for instance, three 5-micron filters in a row ?