Algae takeover without nutrients? I keep a very clean reef environment, maintaining 0ppm nitrates and 0ppm phosphates at all times (API - 2 different kits), however I'm getting an explosion of red hair algae, not sure of the taxonomy, but if you look up close on any of my macro shot photos you'll see what I mean. This has been going on for the past 4 months or so. I do not dose any supplement which contains iron either. So...nutrients are non-existent with algae flourishing. Any experienced reef keepers have any thoughts or suggestions? Am I missing something? lol Greatly appreciated!