Quick question. I'm thinking about getting a chiller for my 125g sw
tank. I have had crazy fluctuations with temps: 72 to 86 degree swings sometimes. So, in order to stabilize temps at around 78 I've decided to go with a 1/4 HP chiller. My question is this: will the chiller INCREASE the temperature if for some reason through the night when the lights are off the water would naturally drop below 78? I see a chiller not allowing the temp to go above 78 but will it allow it to go BELOW 78? is there a heating element in the chiller as well to raise the temp if it does drop below 78? Thanks!!