Hello! It has been a long time since I have been on here. I set up a new aquarium and it has been Lance Armstrong (cycling) for 5 weeks now. I still need to do the first water change but I am not putting fish in till the new year. I am getting ideas of how I want to decorate the display tank. I was thinking of doing a Macroalgae display. Has anyone done this or have you known someone who has? I was thinking of mangroves but that's really all I know of except chaeto. I don't want chaeto in the display. I also want Tang fish so is there an algae that they don't eat? Oh! I have a 125 gallon aquarium with a 55 gallon sump.