I started with IO with good results and then moved on to Tropic Marin. I got Hair Algae and Cyano show up after second water change and got worse with every water change. My Coralline algae started dieing off and snails would not spawn or lay eggs anymore. Glad I only bought the 50g box. I got rid of the Tropic Marin and started Coralife. After about 3 or 4th WC, hair algae and Cyano went away, coralline started coming back strong and snails started spawning after a month or so. Never again will I use TM.
My LFS stopped carrying Coralife so my next salt will be either Reef Crystals or SeaChem Reef but leaning towards SeaChem...I will buy a bag of each and see how my tank responds, your eyes are the best test kit...