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  • Hydor MINI HEATER Aquarium Heater 7.5 Watts for Tanks 2-5 gal
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Hydor MINI HEATER Aquarium Heater 7.5 Watts for Tanks 2-5 gal

by Hydor
| 5 answered questions

Price: $12.99
Sale: $9.23 + $7.99 shipping
You Save: $3.76 (29%)
In Stock.
Ships from and sold by Big Al's Online.
  • Compact heater for small desktop aquariums
  • Safely increases water temperature by a few degrees
  • Flat and easy to conceal in miniature tanks and bowls
  • Completely submersible
  • For tanks up to 5 gallons
2 new from $9.23 1 used from $12.00

Frequently Bought Together

Hydor MINI HEATER Aquarium Heater 7.5 Watts for Tanks 2-5 gal + Marina Floating Thermometer with Suction Cup + Zoo Med Laboratories AZMBL20 Betta Hammock
Price for all three: $16.54

These items are shipped from and sold by different sellers.

Buy the selected items together



Product Details

  • Product Dimensions: 5 x 3 x 6 inches
  • Shipping Weight: 3.2 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B0006JLPFE
  • Item model number: T10401
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (148 customer reviews)
  • Amazon Best Sellers Rank: #25,817 in Pet Supplies (See Top 100 in Pet Supplies)
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Product Description

Mini Aquarium Heater helps increase by a few degrees the water temperature of mini aquariums compared to the room temperature where they are positioned. Raises temperature approximately 5 degrees Fahrenheit in a 2 gallon tank and 4 degrees Fahrenheit in a 5 gallon tank


Customer Questions & Answers

Customer Reviews

He is a Beta fish and was much more active when his water was warm.
beth
For Betta owners who have smaller tanks and bowls than 5 gallons, I wholeheartedly would recommend this heater.
E. Anderson
I've had the heater about a month and now I have no choice but to buy another heater (adjustable this time!)
Samson12

Most Helpful Customer Reviews

75 of 76 people found the following review helpful By M. Lee on December 14, 2006
Verified Purchase
I bought these for my 2.5gallon killifish tanks. These heaters take up very little space in the small tanks, since they are flat.

But be aware that these heaters don't have temperature controls, so the water temperature will change when the room temperature changes. My tank temperature ranged from 92F to 70F with the heater plugged in from May to December. I had to unplug the heaters on very hot days. It seems that these heater will raise the water temperature in a 2.5gallon thank by 8 to10F over the room temperature.

Finally, all 6 mini heaters that I own have been reliable for 8 months now, and all are consistent in how much they heat the same volume of water.
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93 of 99 people found the following review helpful By R. Zastrow on November 3, 2006
I purchased this heater for our beta who lives in a 1 gallon jar; note the heater is spec'd for 2 to 5 gallon containers. During the winter we keep our house at 60 degrees and this heater keeps the jar at a consistent 72.
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53 of 57 people found the following review helpful By Brian J. Williams on March 8, 2007
This heater works well, not bad for small tanks (5 gallons or less). I purchased this for my 1 gallon tank, and it heated the water up to the low 80s. The heater works submerged or placed under the tank. I keep my apartment on the cool side, so this heater did the trick. A word of warning, though--if you have a 1-gallon tank, make sure you have a thermometer in it, because if you keep your home temperature in the high 60s and into the 70s, chances are the heater will then heat the water too warmly, into the mid to upper 80s, at which point you'll have to unplug the heater and monitor the temp as needed. Still, not bad for the price.
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34 of 35 people found the following review helpful A Kid's Review on February 24, 2008
I bought this little gadget to heat my Beta's bowl after he went into pseudo-hibernation. I was afraid a one-gal bowl would overheat so I got a 2-gal one for it. It started warming up immediately, and as all the other reviews state, it gets it about 5-10 degrees above room temperature. Since it doesn't have a thermostat, you really don't want it to do more than that for fear of overcooking your little friend.

My Beta LOVES it. It took him two and a half weeks to come out of his stupor, but he's eating again. It's harmless enough that he actually huddled up behind it, so it clearly doesn't bother him to touch it. He likes it a lot warmer than room temperature (he's really happy at 80 degrees!). SAM (the fish) and I are both very thankful.
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24 of 26 people found the following review helpful By Chad Bayne on February 18, 2008
I purchased the Hydor Mini 7.5W Heater for my .9 gallon tank with my betta. Note that the heater is spec'd for a 2-5 gallon tank. Before he had to deal with 70 degree temperatures, which is not ideal and borderline too cold. Since putting the heater under the gravel in the tank, the tank is now constantly between 75-80 degrees, which is the normal temperature for a betta. I highly recommend this product to keep your betta longer and keep him more comfortably.
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24 of 27 people found the following review helpful By CSharp on March 11, 2008
My betta fish's water was mostly in the 60-degree range, below a betta's ideal temperature (70-80F). As a result, the betta was very inactive. I bought this heater for a one-gallon bowl, and it increased the water temperature about 10 degrees. Now the betta is very active.

Even though the specs say it's designed for a 2-5 gallon tank, I'd still recommend it for a 1-gallon bowl. Just keep an eye on the ambient temperature because this heater does not have an automatic shutoff.
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12 of 12 people found the following review helpful By Marisa H. on February 27, 2009
Verified Purchase
I bought this for my betta's 1 gallon bowl, and at first I was afraid it'd be too much for such a small bowl, but it works great! Though the temperature fluctuates several degrees, it keeps the temperature within a few degrees of 80, perfect for my betta. Since I've gotten this heater, he's been a lot more active now that the water is a better temperature for him. It's also small enough so it's not obtrusive and you can easily hide it behind some plants or under the gravel, I hardly notice it in the bowl anymore.
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11 of 11 people found the following review helpful By Sheri L. Tracey on November 21, 2007
Verified Purchase
This little heater works like a charm in a smaller tank. I have a 3 gallon tank with a single Siamese Fighting Fish. He's more active and happy now that his tank stays toasty. Quick turn-around as well. Exactly what I expected.
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