Hi, I will be adding fish to my 12 gallon nano cube sometime in the next month. I planned to have 3 total fish eventually - a regular Oscellaris clownfish, one black and white one, and a firefish. Then, I read in my book that the Hector's Goby is great at sifting sand and eating hair algae. Some hair algae is just starting to grow with the diatoms in my tank. So far, I only have tiny hermit crabs who aren't interested. Now, I'm wondering if I shouldn't get the Hector's goby instead of a firefish? What do you think especially those of you who have had firefish and/or Hector's goby? How are those fish as far as behavior, temperment, use in the tank, and how hard are they to keep alive? Thanks.