my diamond goby did a great job too, might i suggest a bullet goby? I had one for quite some time in the early stages of my tank, and he kept my sand beautiful.
yep its perfectly normal. lawnmower blennies are algae grazers, and thats what he is picking off the rocks. Like Yote and Oscarsdad said, get him some algae sheets if you dont have much in there already.
my surge protector fried. The one that ran the pump, powerheads and skimmer. I got everything plugged in unprotected except one powerhead and the skimmer...do you guys think ill be ok until i get out of work tomorrow to get a surge protector, or do i need to make an emergency run to wal mart?