Another homemade RO question

[Sourwood Sugarbush]

Thanks for the great explanation of how recirculation works, especially how it reduces recovery rate. Given my small volume, I’ve decided to build a one 400 GPD membrane system with recirculation as you described and scale up later if necessary. I’m sure I speak for many when I say we really appreciate you sharing your expertise!

[paulslund]

I have a quick question on recirculation.. is there any difference between running a recirculating line back to the pump inflow vs having your concentrate line running back into your feedtank? You'd know you are done when your tank is half full compared to when you started?