i've got two goldfish in my 10 gallon tank, and after watching countless youtube videos of other goldfish tanks, i've noticed my tank water isn't as clear. it's not cloudy or anything, but compared to other tanks i've seen on video, they just look so clear and beautiful. is there anything i can do to improve me water quality as far as looks? my water parameters are perfect, i do water changes + scrubbing of algae every week, and this is the filter i am using: http://www.petsmart.com/product/index.jsp?productId=2752295 also a little side note, im thinking about buying a new filter that was made for a 20 gallon tank, but i dont know what the best brand is. any suggestions?