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Hydor 7.5w Slim Heater for Bettas and Bowls up to 5 gal

by Hydor
| 19 answered questions

List Price: $11.99
Price: $10.59 & FREE Shipping on orders over $35. Details
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  • Helps guarantee your fish a healthy life by promoting the ideal water temperature
  • Plug and play
  • No temperature to set
  • Can be positioned under gravel
  • 90-Degree Angle for perfect betta bowl fit
10 new from $10.40

Frequently Bought Together

Hydor 7.5w Slim Heater for Bettas and Bowls up to 5 gal + Zoo Med Laboratories AZMBL20 Betta Hammock
Price for both: $14.22

Buy the selected items together


Product Details

  • Product Dimensions: 3 x 0.2 x 3 inches ; 3.2 ounces
  • Shipping Weight: 6.4 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B006JVQ67K
  • Item model number: T20101
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (175 customer reviews)
  • Amazon Best Sellers Rank: #2,478 in Pet Supplies (See Top 100 in Pet Supplies)
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Product Description

Betta slim heater helps guarantee your fish a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your bowl, aquarium or terrarium an average of 5 to 10-degree warmer than room temperature.


Important Information

Safety Warning
It is always recommended to create a drip-loop when using any electrical appliance in an aquarium. Do not use in a container smaller than recommended.

Customer Questions & Answers

Customer Reviews

My betta is a happy fish with this heater.
Boston007
There's no temperature control and no indication of when it is heating or not, or even if it ever turns off.
Martin LaGrow
I have a 1.5 gallon tank for my betta and its keeping temp at 76-78...he's happy as can be!
Lori S

Most Helpful Customer Reviews

41 of 41 people found the following review helpful By DSpark on July 23, 2012
Verified Purchase
I have a small 1.5 gallon Betta tank which I needed a heater for but most heaters are way too powerful for such a small tank. This heater is excellent - it only raises the temperature 5 to 10 degrees which is perfect for this size tank. So in the winter when my home temperature is 68 the heater will raise the temperature at a maximum 10 degress which brings the temperature to 78. You can also bury it under the gravel so it remains hidden. Would highly recommend this heater.
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38 of 39 people found the following review helpful By Lori S on May 7, 2012
Verified Purchase
Great heater, easy to hide, very reasonable priced. If you have a small tank this is the way to go. I have a 1.5 gallon tank for my betta and its keeping temp at 76-78...he's happy as can be!
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11 of 11 people found the following review helpful By Jess on July 19, 2013
Verified Purchase
Stopped working. I went to change the water and realized it was totally just dead. It was plugged in correctly, worked one day and then nothing the next with no warning. Only had it for about four months.
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10 of 10 people found the following review helpful By Amazon Customer on July 13, 2013
Verified Purchase
This worked fine for the first 2 months, then it quit working. I am very disappointed. I will not buy this product again.
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28 of 36 people found the following review helpful By sam on October 10, 2012
Verified Purchase
I have a one gallon fish bowl and there arent really any heaters made for that size. So because this heater is made for heating tanks up to several gallons, the water temperature of bowl needs to be monitored at all times if using a bowl as small as mine. Otherwise the water will get too hot for your fish. I usually plug mine in in the morning for a bit and then take it out when the temp is around 80, and I plug it in a bit before I go to bed and unplug it for overnight.
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5 of 5 people found the following review helpful By Jellybeanjea9 on June 13, 2013
This works great in my 5gal tank. Hides nice under the rocks. My betta seems really happy swimming around. We keep our house temp 73-75 year round and so far it's working great at keeping our little guy warm.
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12 of 15 people found the following review helpful By Pamela on September 16, 2013
Verified Purchase
I have a 1.5 gallon fish bowl for my betta fish. The bowl is in my office which is always cold, at least 68 F degrees. I needed the lowest wattage I could find. This is the only flat heater I've seen and it runs both wet and dry. After reading the reviews, I took the advice of a couple of reviewers. I placed the heater on a porcelain dinner plate and put the fish bowl on top of the heater. The heater is between the plate and the bowl, it is not in the fish bowl. It brought the temperature of the water up by 6 degrees, so the bowl is regulated between 74 and 76 degrees. There is no way to tell if the heat pad is on, unless you check the heater itself and keep an eye on the fish bowl thermometer. I took the suggestion of another reviewer and added a cheap wall timer for the heater. I programmed it for 1 hour on and 1/2 hour off. I was uncomfortable having the heater run continuously, so the wall timer is working out well. It took a few days to make sure the heater and the wall timer were both doing their jobs, but so far almost three months later all is good. Hector the betta is happy he has a warmer bowl to swim around in. Good value and gets the job done for a small bowl.
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11 of 14 people found the following review helpful By Rum Springa on October 23, 2013
Verified Purchase
Pros:
1) Inexpensive and stupid simple to install
2) Works well in 3 gallon volume of water

CONS:
1) "Always On": it does not have on/off when it hits a certain temperature thus it will keep raising temperature in a small volume of water. ***BECAUSE OF THIS YOU NEED TO MONITOR YOUR TEMPS CLOSELY, ESPECIALLY IN WARM ROOM and/or SUMMER!!!***
2) DO NOT recommend this heater for anything smaller than 3 gallons, see notes.
3) Even with gravel on top and lots of power cord slack, this heater has a tendency to want to "float" up to about the gravel line no matter how deep I put it under the gravel (have about 3/4 inch gravel on top).

BOTTOM LINE: Solid BUY if for 3-5gallons of water. If you are looking for a Betta tank heater for this volume of water, this is the one to get.

NOTES:
Bought this to initially heat a 1.5gallon tetra aquarium (see review) Tetra 29137 WaterWonders Aquarium Cube, 1.5 Gallons, Blackand it would raise the temp too high for Betta(upto 87F in a room that is about 75F). Moved the fish and this heater to 3gallon tetra tank Tetra Cube Aquarium Kit, 3-Gallon and temps ranged from 77-81F throughout the day. Not sure if that's too "wild" of a temperature sway in 24 hours but my Betta does not seem worse for wear or stressed. Will update this review if something changes.
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