<a href=showthread.php?s=&postid=7736015#post7736015 target=_blank>Originally posted</a> by jda
I use 50/50 IO and Oceanic. However, I will use either if that is all that I have. TM was good too when I have a few bags. Honestly, I could never tell a difference in the coral with any of them, but I let them mix for a day or two. Of course, my test reading were slightly different.