It's good to see you have several filters running. That's an important factor when you have a lot of fish in a tank, mostly for the oxygenation.
One thing to be aware of if you know your tank is overstocked is that if there's a power outage, you need to have something to get oxygen into the tank. A couple of battery-powered air stones will work (if there's a power outage, put the stones near the surface of the tank). When you have a lot of fish, they'll soon start running out of air if the power goes out.