it is a part of the Blu Coral method//////pappone feedings that were brought to our attention here on RC in the Italian thread stickied at the top of the SPS forumn
I feed the pappone, but leave the spirulina out. I have seen it used heavily in the "invertebrate formula" (frozen) by Ocean nutriton/formula foods?(cant remember which brand but the makers of formula I and II and all that)
I did used to include it with cyclopeeze when i fed my sun coral, but I am a long way off being able to tell you anything about it regarding SPS(i assume you are speaking Acroporids mainly)