Wow - thanks for the detailed info! I'm running 1 micron sediment, and two Matrix type NSF rated carbon blocks. When I started again last year, I also added the standard 10" DI canister. The membrane is a Filmtec 50 or 75 GPD, I don't remember. I've got the pressure gauge just before the RO. My hand held TDS has read 0 from the beginning - (about 7 months ago). Sounds like I'm doing OK.
I'll let chwcdw get back to his thread now
Matt