I have a 12 gallon tank so I'm assuming the water can change quickly, I have a 50w heater which works fine but I have taken it out due to summer and my tank will get to right around 80 on its own, but then it gets so hot we have to turn the air on and then it gets down to around 76. Any suggestion fish are fine so fare but if it keeps doing it I'm scared it's going to effect the.
Please help THANKS
Please help THANKS