stunning tank you got there. I didn't read anything because it was just too much to read, but I wanted to note that the rock you got is some of the best rock that I have seen. please, tell me who you buy your stuff from, because that guy really tries to make his customers happy. on the second note, I assume that you have high light by looking at your nice anemone, and if I were you, I would move sponges into the area where not a drop of aldgae shows, like nicely shaded area. I think they do get the light where they are and it's not good for them long term. also, I would check into light needs of your gorgonias or sea fans, because some don't need light just like tree sponges, and algae can kill them too. forgive me if you already know everything that I just said or if someone already noted this.