Hi guys, This plant/algae has been slowly taking over my tank and whatever I throw at it does not kill it. I've done the following: - water changes - added GFO reactor - added Carbon - increased skimming - Vertex 180i - changed to 10 micron filter socks - added a refugium - increased magnesium - increased alk, - increased calcium. - added sea slugs - added snails - added crabs - decreased feeding of fish - new ATI sunpower t5 fixture with new bulbs - reduced lighting cycles - added Algaefix I dont know what else to do. I have to manually try and rip it out every time a do a water change but it always comes back. I am thinking of doing a week long blackout period. I guess the last thing to do if that doesn't work is replace all the rock. Please help!