(this is in reptiles because i have a turtle, res)
i have this heater: http://www.petsmart.com/product/index.js... and it doesn't heat up my 50 gallon tank to 78F, but instead only to 75F barely. I have a 150 watt heater, and i've had it for only 2 months. I set it to 86F, and in return it hardly gets to 74F. The tank is not by any drafts or open windows, so i have no idea why it is malfunctioning. i just got a new battery for the digital thermometer, so i know thats working! i really dont want to buy a new heater, it cost me $50 and i cant afford another one! WHAT are reliable brands, i thought the rena smart heater was good, but i guess i was fooled!