I have a nano cube 12 gallons and it isn't doing very well. i only have live rock in it. Live sand also but i can't get rid of green and brown algae. Any good tips on how to get rid of it? I also have a 55 gallon salt water doing really well. I have a 75 gallon and 100 gallon freshwater. I haven't had no problems with any of these just my 12 gallon? :idea2: