Hi Guys, I have got some red gracillaria algae growing at quite a rate from one of my live rocks between my Rics. It is smothering the rics, so I will have to cut it out. Should I keep this in my tank as some sites say it is good and other say it will take over the whole tank? They say Tangs love to eat it, but I have no tangs in my nano tank. Advise please!