ro or ro/di

[fishface]

hello all,

brand spankin new here and was wondering if anyone can make any recommendations regarding ro/di.

do i need ro/di or is ro enough? i read about aquasafe systems...opinions on these anyone? i've only got a 25g tank so i really only need small amounts of water to start with but looking at j&l it's at least a $200 venture! yipes!

anyhow, i would appreciate any insight on this if you can help a newb!