almost 5 weeks into cylce

I am 5 weeks into cylce , I have 20lbs of live rock and 15lbs of dry. I used 3 bags of live sand. I have 1 green chromis 1 turbo snail and some other black and yellow striped snail. I have been testing amm once a week and have had 0 , 0.1 nitrites and 0.2 natrate. I have green hair algea growing . Was it the live sand that quicky cycled my tank? do i need a clean up crew now?
http://i1001.photobucket.com/albums/af135/liquid35/Picture005.jpg
http://i1001.photobucket.com/albums/af135/liquid35/Picture004.jpg
http://i1001.photobucket.com/albums/af135/liquid35/Picture003.jpg
http://i1001.photobucket.com/albums/af135/liquid35/Picture001.jpg
http://i1001.photobucket.com/albums/af135/liquid35/Picture006.jpg
http://i1001.photobucket.com/albums/af135/liquid35/1337133426783.jpg have no idea what these are thay came with rock?

 

Probably a combination of the live rock, sand and the bioload. I would add a clean up crew to take care of the hair algae and then keep an eye on your nitrates once the algae is consumed.

 

Should I also add cheato to fuge ?

 

What are you using as filtration?

 

a fuge with miracle mud and a reef sock ,had not turned on skimmer yet.