Peen Plax Accurate in Keeping Tank Temperature At Set Temperature
The Penn Plax aquarium heater works well. Thermostat in the unit has been keeping the temperature constant since I started using it about a month ago. Would recommend.
The unit works ok, but we had it dropping a couple degrees overnight with the room temp dropping 10°-15°. It's in an 18 gallon aquarium. It was a good value.