Originally Posted by xxabc
Bettabob - wait till you get the in-water thermometer and see what it says. If it actually says 74 degrees, it's defective (not too rare with these type of heaters. Could be returned.)
Doubleatheman - What if someone's house just runs that hot? Lol. I think the smaller the tank, the warmer it will get with a heater. That's my logic anyway... lol. Mine is about 6*F higher.
I'm just getting at temp of the house should not cause a direct change in water temp (unless your house is drastically lower) the heater should heat the tank to a certain temp regardless of room temp, like normal heaters.
EX: your room is 72* the tank should keep in the range of 76-80.
EX2: Your room is 67* the tank should be in the range of 76-80 still. (if the tank is within the rated size)
EX3: your room is 75* the tank should still be 76-78, it would be hotter if the heater constantly kept the tank a certain temp above room temp.
This is all in theroy, I'm going to keep an eye on my tank temp and see how it goes. I keep my room anywhere from 58-67 at night depending on how I feel. If I need to be more constant for my Betta I will, but this heater should eliminate that need.