ATO are great pieces of equipment as well. I run a JBJ with a tom's aqua lifter on my system.
In terms of making your own ro
, that is up to you. You should want to use ro
in your system to control what is going in. If you can buy it from your LFS
you might want to do it that way, though it is always cheaper in the end and offers more control to ensure 0 TDS
is entering your system if you do it yourself.