Thanks to everyone who has been answering my questions lately. I thank you and more importantly, my fish thank you. My question today is about filters. I originally bought a 10 gallon aquarium starter kit. Since that purchase (the tank has been up and running about 6 weeks) I have upgraded and replaced the heater, thermometer, and hood. I still am using the Top Fin 15 filter. Is this sufficient for a 10 gallon tank which I am planning on adding multiple plants to? Should I invest in a better filter?