I recently xfered some live rock from a friend's tank that he was dismantling and he must of had some funk goin' on! Now I got the funk. I can scrape the walls of my tank in the morning and 6 hrs. after the light comes on the walls of the tank are green! I've never seen anything as agressive as this. I'm thinking about blacking out the tank for 72 hrs. or getting a diatom filter... or both. Anyone have any suggestions. Thanks respectfully, Ray