RO/DI experts. How to upgrade my RO/DI

[Dondante]

What would I need to make my RO/DI system more efficient? More water is fine but I'm mainly looking for longer lasting media if possible and less water waste. Is that possible?

My RO/DI is:
vertex puratek 100pgd

 

[Retro Reefer]

Adding a booster pump was the best thing I did to improve my RO system performance and adding a extra DI canister and possibly a extra carbon block if you have high chloramine will also help improve effectiveness of your system.