toughguy1
Aquarium Advice Apprentice
I have a 20 gal FW with a new 75 watt Top Fin heater. I am concerned that maybe I don't have enough wattage. I want to keep my tank at 78 due to having a tropical angel in the tank. I have adjusted the heater to where by the end of the day, it will acheive about 78.5 per my digital thermometer. However, when I turn the light off at night, and it loses that source of heat, the tank is 76 the next morning. Is this a problem??
Rob
Rob