Just went to feed the fish and low and behold I have red slime on some sand and rocks. My yellow Watchman Goby is dead, upside down behind a rock in back. Can see it but cannot get to it to take out. I just added Chemiclean and started a 3 day blackout. I have no idea why I having this algae problem for months, probably 8 on and off. No clue what to do but give up.