the pictured softener came with my RV. This is the only thing I have no literature on from the PO. I have some questions. It has 1 bottom nipple and 1 top nipple(for water in & out). It has no name brand identification anywhere on the container
1. how do you regen?
2. how much salt? table or rock?
3. which is hard water "IN", which is "SOFT" water out?
thank you