I'm wondering if anyone has added a water meter to their mixing station? I'm looking for a way to track how much water is being moved from the RO tank into the salt mix tank so I know how much salt to add. I'm planing to use brute can so they will be opaque without graduation marks. I have seen some inexpensive hose end meters that seem like they could work however I have some concerns if there is a risk of contamination (I don't believe these are intended for "potable" water) and the more expensive models tend to have bronze bodies and I'm not sure if that presents risks as well.
The sight glass option mentioned in another thread could be another solution as well.
The sight glass option mentioned in another thread could be another solution as well.