Question about Miracle Mud

[Bob I]

I know this is a can of worms, and the cause of many flames. However, I am considering getting some Miracle Mud for my refugium. It is an expensive proposition, so I would like to know if anyone uses it. I would also like to know what users think of it. I am in no way interested in opinions, just the facts ma'am. In other words "do you use it, and do you like it?"