Ok, well on my 20g i had a little bit of beard algae that came in on a plant i am pretty sure. So that little piece has EXPLODED into a freakin tank that is hairy. When ever i got this stuff in any of my other tanks i would just scrub it off the rock and let it sit for a day in the sun and then put it back in the tank and everything is good. But i would have to scrub the whole tank on this 1. So what should i do to get rid of it?