ugh, heaters! my heater is the only thing in my tank giving me a problem. My poor fish either end up at 72 or 82. I'd like to keep them around 76-78ish but when I adjust the heater even in just tiny little movements it does too much. Does that mean its too small or too big for the tank? Confusing!
Here's an example. In the evening tank is 72ish, too cold IMO. I bump it up maybe three little tiny movements. By the next morning, the tank is 82! Bump it down maybe two little tiny movements. By the next evening, tank is 72-74 again. And so on and so forth. Continuously. Poor fish! I wish they made (or if they do, that I had to money to purchase) a heater that you can set the actual temperature to what you want the tank to be and be done with it. (If they do make it, how much does it usually cost?)
Totally off topic, but the other day I went to a LFS(chain) and bought two platys and I had to explain to the fish person how to tell if a livebearer is a male or female. She had no idea!!! (nor did another of their fish ppl) Luckily, I got a survey on my receipt and when they got to the part about things they can improve, I made sure to say, "Train your fish ppl so they at least know how to tell the sex of a fish and a little bit about running a tank!!