Howdy folks...I have a 30 gallon aquarium with 4 3" Oscars and 4 - 2" cichlids and a Rope Fish. I recently planted some various plants and have noticed a significant decrease in the water clarity. I feed various foods (pellets, flake, live fish, krill, dried shrimp) and have the standard filter that comes with the tank as well as a powerhead. What is causing the cloudiness? Thanks for the help.