hair algae

[aceiswild7]

i have some hair algae on one piece of rock which i noticed comes off very easily when i do a water change with the siphon tube if i go close enough but i really dont mind it that much is it actually detrimental to the water quality?
thanx

 

[peasly1]

some say its from high phosphratates which I
had just checked and it was very high. could also be from over feeding

 

[aceiswild7]

thanks but thats not what i meant i bought the rock with the algae already present on it because i thought the angels and tang would pick at it im not worried about my water parameters they are fine but im just curious if its presence is making an impact on my water