I recently added a pump to my tank for some extra flow in the water. Ever since I have done so, my senegals have been super active. I was just wondering if they are agitated by the extra movement on the top of the water. Is this normal? Healthy? Also, I have a 150 watt Fluval (sp?) heater. I have it set on 66 and it heated the tank up to over 84 degrees F! What is the deal with this thing? Anyone else had problems with these heaters?