Hi everyone, I have a whole crap load of corraline algea that has accumulated over the years. at first I was happy because of the beautiful bright purple color... but now it has completely encrusted my live rock and is starting to go for the back of the tank. Right now it looks ugly because there are these purple blotches... so my question is what do you guys do with them? do you scrape them off? or just keep them there? honestly, I think it is a pain in the butt scraping them off.... so are there any ways of controlling growth?