Hey, thought I'd join the forum and post some pics of my ongoing algae problem and see if anyone can give me some advice! Been into SWA for about 20 years, but this tank won't stop growing the algae! No living rock, broke it down a few dozen times, don't have any fish right now... Sterilized the tank a few months ago, cycled it for 4 weeks with no bio-anything. Using all reverse-osmo bottled water, instant ocean mix. As soon as I tried to start bio-filter (used the "fresh-dead shrimp" method this time) - the algae returned within days. Can anyone look at the pics and get an idea of what kind of algae it is and any suggestions? I'd love to build this into a nice reef tank, but the cyano-algae grows so fast, it just turns into a red carpet in about 2 weeks.