Vir, as you know I love it and have been using it for about 8 weeks as a beta site testing partner.
in the almost 8 weeks, I have over 1" of growth in my sps and lps polyp extension is much greater than before - colors are sharpeining and my phosphates went down from .17 on the Hanna Colorimiter to .07 (likely why the colors have been steadily improving)
Additionally, the acans and other lps that I frag and grow have many many heads more.
Hope this helps. We sold a good amount of the product, so we'll se how the reviews start picking up.
Call me if you have any questions about it
Jim