So, I have a massive outbreak of some kind of brush algae on my dwarf sags, and I've been doing Flourish Excel overdose for a few days so far with limited lighting. I think the outbreak was from a 5500K 15w CPL bulb I put over the 2.5g tank.. I'm not sure. Anyway, the algae looks gray and really gross now. It looks like it's dying. I tried to scrap off some of it, but it is still firmly planted on the leaves. Does it eventually fall off or are my dwarf sags ruined?