Hi! I have a 10 gallon tank that's been set up for almost 3 months now. And I have 2 mollies and 3 pink tetras and no live plants. ( ALthough, I've been thinking of getting live ones). My water quality is fine, and usually has been. But lately, my water has been a bit cloudy. Not so cloudy that I can't see anything, but there seems to be lots of little itty-bitty particles just floating around. I do weekly 20% water changes, and have been adding those drops to cure the cloudiness. Are these particles harmful? Should I take clean my decoration weekly as well? Help!!!