I have recently gotten a new 10 gallon tank with 2 orandas and a small snail. The fish are VERY happy and lively, but the water is so gross looking! It is brownish/green and not clear. I have been feeding the fish twice a day (as per the instructions of the fish store owner) and have recently added two fresh water plants (I thought this would help cut down on the feeding because the fish like to eat the plants). I have had the tank for one week and have been changing the water and vacuuming the gravel but it seems like a futile effort! I know that goldfish are very dirty fish, but this just seems ridiculous! In fact, I'm embarrassed for people to see it. Again, the fish are happy and playful- I'm not worried about their health at this point, but I know that orandas tend toward infections on their wen if their is too much bacteria. Any suggestions are greatly appreciated.