Looks like hair Algae to me as well.
You should also measure your phosphate levels.+ Frequent water changes! Very
important for an Algae problematic tank.
I would also recommend to get some algae eating fish, Change your photo
period and get some Amano shrimps if you can. (Although your angels might
not like them to much.
"-=Almazick=-" wrote in message
news:uqpLb.3119$I06.30725@attbi_s01...
Can you please tell me what kind of Algae is it?
http://s93457593.onlinehome.us/Algae.htm