Welcome to RF!! As stated above, I think you're experiencing a normal problem with new tanks cycling. One thing that I would suggest is getting 40-50 more pounds of live rock. You don't have enough live rock in the tank and once it's cycle is complete, adding more live rock will most likely start the cycle over again. If possible, try aiming your powerheads more towards the areas effected by the algae. It looks like that one big rock could be blocking current from getting to the effected area. Good, strong circulation has been a very successful way to get rid of Cyano Bacteria. Also, be careful with that Emperor filter. Make sure you clean the media on a VERY regular basis or it'll become a nitrate factory, causing more algae problems. One more thing to consider....I love Remora Skimmers....they're awesome and I have one on my 46 bowtank. Unfortunately, they're upper end rating is for 75 gallons. A good rule of thumb is to always get a skimmer rated for at least 1 1/2 times the size of your tank.