Anyone got any advice please on the best way to get rid of alge, I have recently set up a new tank '3 weeks' with lights (I did not have any in my old tank so did not have a alge problem) and brown alge or diatom 'what ever its called' is spreading on my silk and real plants also on the back of the tank glass, now Iv noticed that the green alge is growing over the brown on the glass, I have scraped it off the glass, I have a small hillstream loach so should I leave some for it to eat.