I did the same with my uglies, cleaned either the glass or the rocks on Sunday.The cube is started to clear it's ugly stage. I kind of let it go on purpose to let the algae burn itself out.
I will clean the glass this evening and take a pic.
I also am installing a couple Kessil A360WE on it to compare to the K7. I have to figure out how to mount them in the current canopy tonight.