I am just starting to get this brown fizzy stuff all over my rock. I am thinking it is brown algae. I have done some reading on what I need to do to get rid of it I just want to be sure I understand what I need to do before it gets out of control.\r\n\r\nI am going to be buying a phosphate reactor and putting some type of phosphate removal filter media in it. Any suggestions on brand names or types of media?\r\n\r\nOther wise it is my understanding that all i have to do is water changes and of course use RO water. \r\n\r\nAm I on the right track?\r\nThanks!