hornet 3 Report post Posted November 12, 2015 Started a tank around 3-4weeks ago and have this brown algae taking over. I assume it probably came with plants or driftwood i collected. Is this likely to subside as the tank ages and plants grow or will this need some other course of action? It looks ugly and is growing on my mosses, making them look like crap. Share this post Link to post Share on other sites