What's up everyone! I have a question about temperature swings. I have a dominant SPS nano aquarium (45gallon water volume). I have a temperature controller that powers two 150w heaters. The controller only adjusts in 1 degree increments. So I have it set to 78 degrees Fahrenheit and the heaters won't switch on until 77 degrees Fahrenheit. Then it takes maybe an hour or less to bring it back up. Last night I saw the temp get to 76.5 then raise to 78.5 after the lights went out. Could this be an issue in the future? Or is this within the norm for temperature fluctuations?