I've had my 35 gallon up and running for about 4 months now.  This brown hairy/slimy algae has been growing like mad on a few rocks and on the back glass (I scrape the other 3 sides).  Is this just a normal part of the maturation process or should I try and get this under control?  I've got a decent clean-up crew and the only things that seem to make a dent are the Astrea turbos.  Please help......(sorry for the iphone pics)
 
 
 
