RO works best with sodium so you get longest life and most efficiency when plumbing the RO system after your water softener. In my basement I tee'd off the water softener outlet to my RO system (that was a sleepless night) and also tee'd off an outdoor spigot for my non-softened water to mix with my RO.
Everyone is so helpful. I started my build tonight on the R.O. system. Pre-softener for the mix and post softener for the RO membrane.
Hopefully I can get the mix dialled in
Hey Everyone,
Just wanted to update with some testing I've done.
The new tank comes in this week, but I have my RO mixing station built and running and figured I'd try to get the mixes right.
Here is what I have found
100% RO Water:
PH - 6.2
TDS - 6
GH/KH - 0 (or 1, not sure really how to measure it. The first drop stayed the original colour)
75% RO Water - 25% Unsoftened Tap:
PH - 7.12
TDS - 134
GH/KH - 5
66.6% RO Water - 33.3% Unsoftened Tap:
PH - 7.3
TDS - 164
GH/KH - 6
50% RO Water - 50% Unsoftened Tap:
PH - 7.4
TDS - 260
GH/KH - 8/7
Based on these numbers I'm thinking the 2/3:1/3 might be the best fit for me. My mixing station has a sight glass up the side of the barrel so I can make a mark wherever I need it to be and be pretty consistent.
Thoughts or Advice? I think I'm on the right track.
Looks good and the numbers are consistent based off your 1:1 mix the 3:1 should be 130 TDS, 2:1 should be 173 and your straight tap 520 so you did a good job measuring!
Any of those ratios would be fine. As you said I'd go with 2:1 mix and your pH might settle slightly in the tank with biological activity but great consistent water and healthy stock are the best place to start.