It has the trace elements boosted for reef tanks. Calcium, Alk, and Mg.. maybe a few others. If you dose your tank then it doesn't really matter which salt you go with. A lot of salts are just IO repackaged with trace element add ins.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.