I have a 75 watt heater on one side of my 55g tank and on the other side in one of the 4 divided sections I have another 75w heater. The section that the heater is in is more than 85 degrees warm! but the other sections around that one are at a cooler temp. that I wouldn't worry would fry my fish as it gets hotter in the house cus of the weather. I don't have a fish in the section that has the heater yet, but my question is how do I steady the temp. with a heater on that side of the tank without making any of the four sections too hot or cold? I do have a smaller 50w heater, do you reccomend I try switching that one in instead of the 70 in the divided side?