I have a 10 gallon with 2 dwarf puffers, one of which seem to be a real jerk. The tank seems to have a lot of brown algae build up everywhere. I clean the tank once a week and by the end of the week everything is covered in brown muck. I put a large amano shrimp in there with them and he his currently MIA, and may have become a casualty. What would be a good algae eater for this tank? Wouldn't an Otto or Dwarf Pleco become too big for 10 gallons? If so I could always move them to my larger tank by when the job is done.