Thanks Gina and everyone else for the nice words. Also I'm always revising the article... the more experience we all have the better, so if you have any suggestions, post them and I'll revise the main piece.
I use instant ocean. It's affordable and very reliable. In my reef club everyone uses IO, except for two people who use reef crystals, and one of them has done an experiment and really hasn't seen much of a difference.
So I recommend Instant Ocean
