help with make up water please !!!!!!!!!!!!!

[jerl77]

ok got my frist ro unit today .the guy at the lfs sold me some Kalkwasser and i big jug to dose it in .is there some thing i can use just pour in the make up water them into the sump.or do i have to use this Kalkwasser stuff help please .

 

[reef93]

here is the info you need http://reefkeeping.com/issues/2005-01/rhf/index.php