Well, i won't get into it too much as i have another thread going on it sort of with the treatment, but it looked like a carpet due to neglect, newborn took up my time. Last three months i've been working on stability, put gfo and carbon on the system, carbon dosing, and manual removal. This stuff doesn't flinch with clean water, just kept coming back, and while that might look like a lot, thats the worst rock in the tank behind the elegance. The tank is about 10 times better than it used to be. The algae is slowly turning white and dying off, its actually a very good feeling.