Finally heard back from SpectraPure. They helped me find the part number that was on the bottom of my membrane canister. MPRO-15, manufactured in September of 2002. Looks like it definitely has some age on it, but I bought a TDS
meter and it appears to be working well. TDS
at the tap was 340 ppm
. The first bit of water out of the membrane was 40 ppm
, but after running it for a few minutes, dropped to 8 ppm
. If my quick math is right, the RO
is removing ~97% of my TDS
Only downside...15 gpd is TERRIBLE. But the good news is that it looks like it will cost less than $60 to upgrade to 90 gpd.
It seems like the consensus here has been that using RO
water will not benefit me or my fish enough to offset the cost/inconvenience of using it, but with it already being installed in the house, I want it to be fully operational, in case I decide to use it.