So my fuge always gets covered by a layer of cyano im assuming... purple blanket of crap... and this happens every week or so. I always take the macro i have in there and turn it around so the cyano doesnt block all the light from the good macro, but im thinking this shouldnt happen....... isnt that why i HAVE a fuge? to take nitrates and phosphates out of the water and prevent algae from growing? \n\nAnything i can do about it??