I just did a big water change (probably around 40%) in an attempt to clarify my water. My tank is overstocked and I do feed pretty often, because I want my smallest fish to grow quickly to catch up with the rest of my fish. However I struggled with lots of tiny particles floating around the tank making it somewhat cloudy proir to getting the small fish, meaning I didn't start feeding a lot until recently. I have some flat sandstone rocks in the tank as decorations, could they be disintegrating thus causing the cloudy tank? Is there a water clarifying chemical that may work? Also, how do you guys clean the walls of the tank? i have been just using a clean wash cloth that I rinse thoroughly before using in the tank to make sure there is no residual detergent or anything. Would a small handheld squeegee work? If you don't mind would you post a step by step list of how you do your routine water changes/tank cleaning? thanks!