Hydor Betta & Betta Bowl Slim Heater, 7.5-watt

I wanted a slim heater for my 2 gallon bowl. It didn’t work like I wanted it to. It wants to float and takes a lot of wrangling to get it to rest at the bottom. I tried burying it in the sand but that wasn’t helpful. Just not what I needed.

Love this heater. It is very quiet, keeps at a perfect temperature. My betta is more active and thriving.

Quit wasting your money on these small inefficient heaters. Betta fish require constant temperatures of 78 to 80 degrees at all times. They Thrive better in warmer water and resist bacteria better. I threw out all my cheap small heaters and purchased a Cobalt neotherm that's suitable for a 2 and 1/2 gallon tank. What a difference it made. The temperature is always set at 80 degrees. The other smaller cheaper heaters usually go on and off according to your room temperature. So there's too much fluctuation and the water is not always warm enough. Another good hint is do not over feed your Betta. Only give him 3 pellets twice a day and skip a day once a week. That is also need filtration system set on the lowest setting so the water is not to turbulent. Keep the warm and consistent and you will see a big difference in the condition of your Betta. Also don't forget to make partial water changes weekly, being careful to replace the water at the same temperature that's in the fish tank. You can also use a little aquarium salt in the water, but only adds more salt when you are actually removing old water. If you are just replacing evaporated water do not add any salt to that water. Water must always have a conditioner and dechlorinating drops added per the instructions on the bottle. After trial and error, I have come to the conclusion that what I am advising is the best method to keep your fish healthy, active and healthy.