10yr old RO system

[TRDfan]

I have about a 10yr old RO/DI system (cartridge changed every 2yrs or so) under my kitchen fossit that i was planning on using to set up my SW tank but i was wondering if i should change it out for a 4stage system.

For those of you that have a 4 stage portable system, how do you guys like it?? thoughts.....

sorry for the crappy phone pic

 

[melosu58]

Moved to General Hardware and equipment discussion.

 

[Starblenny]

I have a 10yr 3 stage RO system. It's okay but everytime I change filters, my TDS is about ~200. I'm thinking buying a RO system from Bulk Reef Supply