Review on 🐠 Zoo Med BettaTherm: Powerful 7.5 Watt Submersible Betta Bowl Heater for Optimal Comfort by Samantha Salazar

I should have paid more attention to the previous reviews. I was hopeful because I was looking for something small for a 1 gallon aquarium. The first heater did not work at all, I had to wait over a week for the second heater to be sent. The second heater was only able to heat 1 gallon of water 3° above room temperature after waiting 36 hours to see if it would work. Unacceptable