MARSH (Marine and Reef Society of Houston) recently did a sizable group order of the stuff, and along with a horrendously long time to get the order accepted and delivered, I have not seen any postive comments for it.
I added 5lbs to my fuge and other than causing a silt cloud that lasted a day, I have not seen anything new and interesting running around in it over the last 2 weeks since we got it. It *may* have added a few more pods to my system, but nothing to write home about.
If there were any critters in it, then they are extremely tiny and will take a long time to grow enough to be visible, and effective.
Not a positive experience from my perspective. And from the Customer Service side, not an experience I care to repeat any time soon.