Ya that's the exact same deal I tried to get but during 2 seperate group buys they sold out so I said screw it and got the 4 stage lol ... Maybe one day ill order my 5th stage .6 micron carbon block canister to finally have my 5 stage Ro/Di that I've wanted haha
I would imagine its pretty easy to add a canister to these??
Ya just unglug a couple lines and plug em into the new canister and the new canister into the unit.. their units are super simple and once you actually get hands on with yours you will realize it couldn't get much easier lol
Don't be! I was at first too and once I got hands on with mine I wanted to smack myself cause once again its extremely simple. I highly reccomend reading up on them a little and watch some videos on plumbing and once it clicks for you it will be a cake walk allowing you to customize it to your needs.