I have a 37 gallon tank with 1 9-inch Pleco, 6 Zebra Danios, 3 Peppered Cory, 1 Albino Cory, 1 Dalmation Molly, and 1 black Molly. I've had the Mollies, Danios, and Peppered Corys for maybe 3 or 4 months now, originally went in just for some more Albino Corys so that my existing one wouldn't be...