Ro filter question...filter replacment


New member
I bought a used ro unit for extremely cheap and it needs new filters

It is a 6 stage unit:

membrane....going with 50gpd....What brand is best?

3 sediment/carbon....what combo and micron size is best?

inline DI that sits on top of the unit.....will be removing this for a 2 stage DI
addon that sits next to the unit....heard/read that this way is better to keep the resin from channeling.

The 6th stage is a "Taste and Odor reduction" can I just remove this? What purpose does it serve if any for a reef tank?

Thanks for any help