I have a 45.6 US Gallon tank (39" x 18" x 15") Length x height x width. It is fully cycled (12 weeks) and water good. I have 5 x danio's, 6 x Harlequins, 6 Platys, 3 x cory's, 3 x dwarf zebra loach, 3 x Neon Dwarf Rainbowfish and 8 cardinal Tetra....I have been on loads of websites and they all say my tank is ok not overstocked and that my filter Fluval U4 is providing plenty of filtration....just want an experts opinion.