my 46g tank is almost 2 years old. Some months back i battled both hair and red carpet algae. It finally went away but then started growing only a fake coral and nowhere else. Since i read that it feeds of of nitrates on phosphates I decided to let it grow, now it looks like a green hair algae plant and you can't even see the fake coral. It looks kinda nice, like a fluffy plant and I'm hoping it is helping with water quality, is that what it is doing or should i clean it off.