Review on 🐠 PULACO 25W Mini Aquarium Heater: External Controller & LED Display, Adjustable Submersible Betta Fish Tank Thermostat by Lisa Price

This heater is unlike any I've had before. I really like it and I hope they expand on the concept. I'm a fan. Firstly, constant direct touch is reliable, stable and cool. At first I wasn't sure if it would work either. I actually love it. Maybe seven or nine hours to go from 71 to 79 in five gallons. No temperature flash and has never been below 78 before running a set at 79 again. I've never seen him at 80 or over. Next, it's an extruded quartz glass cylinder instead of the 'normal' clear glass tube with white quartz sand to conduct heat away from the serpentine; it is not white (as can be seen in the pictures) but rather translucent/refractive and generally blends in very, very well with the aquarium wall. Finally, after the desired temperature has been set and confirmed, the display returns to the current/actual water temperature. These are three things that are not mentioned and that deserve to be mentioned in the description. I hope they will be useful to others.