thats what i think is going on in my tank maybe its either the algae or the diatomes from everything that happened with the planting an the new light. ill get it sorted out tho! i cleaned a good deal of it off friday morning after work. no more brown water and its not nearly as bad. i love this place! everyoen is so helpful and nice. i remember my mom telling me how aquariums are good for your health cuz they lower stress and help keep your heart rate an blood pressure lower maybe thats why lol