I'm not one to add any snake oil to my tank to hope for faster results. You say it is growing, right? I would say to just let it go, and don't get into the habbit of trying to super-charge your tank with chemicals and whatnot. Sometimes these chemical and whatever actually do more harm than good. When I started, I went through a phase where I tried every product on the shelves at my local store........I don't think a single one worked that great. My fiancee and I were fighting really bad for awhile, and I was in and out, and totally neglected the reef. After it all settled down a few months later, I got back into the reef again, and basically noticed how much better it did with me NOT messing with it all the time. I still to this day try to not mess with my tank all the time trying to find a miracle product or whatever, and the tank does so much better. It is completely stable and all is well.