Who is using what line? I have been on SeaChem Aquavitro additives and Salinity salt. Been considering a switch. Thought about TM as well as EVS and Ref Sea. Wondering how is on what line and WHY. Also considered a lower quality salt with high end additives. Since I have to dose any way does it matter if I am starting out low. Have seen some great tanks and then I am shocked to find its IO. if you have Tony Vargas's book, look at the tanks in the back. Most of those amazing systems use IO. Most of the US tanks at least.

