kdpuffer
Aquarium Advice Addict
Hey all just wanted to share a tip I learned from a friend about rodi systems. Any system I have seen has the di resin in canisters mounted horizontally. If you flip them to sit vertical the di is much much more effective. I did this months ago after seeing my tds increase (it was either 20 or 40 don't remember) and it extended the life of my resin and brought my tds down to zero. I actually was able to run my rodi system without changing filters, membrane or resin for 2 years.