Soooooo...not knowing any better, I find myself with a 10 US gallon tank with: 3 Mollies 2 Platies 2 Cories How bad is it? My biofilter nitrifies like gangbusters, and my water changes are 50% weekly. The inhabitants seem happy and healthy. Thanks in advance for thoughts. Over long term, the plan is to move away from the live bearers.