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Tetra HT Submersible Aquarium Heater
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- All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached.
- The HT20 uses a built in electronic theromstat to automatically maintain water at 78° F which is ideal for most tropical fish. No adjustment is requried.
- Ideal for aquariums between 10 to 30 gallons with hoods or glass canopies
- The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other décor.
- Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.
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All Tetra HT heaters have red/green indicator lights to let you know when the heater is heating(red) or on standby(green). The low voltage thermostat maintains water at 78°F without any adjustment required. Be sure purchase the correct heater for your tank size. Buying a heater too small for your tank can cause under heating. It is critical to ensure your tank is equipped with a hood or glass canopy to contain the heat inside the aquarium. All Tetra HT Heaters will shut off if an electrical short is detected for your safety.
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DirectionsHT Submersible Heater (100 Watt) The new Tetra HT30 submersible heaters for aquariums ranging from 2 to 30 gallons are easy to use. The electronic thermostat automatically adjusts heat output to keep the water at a constant 78°F. All you have to do is place in the aquarium and plug it in
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|Shipping||FREE Shipping||FREE Shipping||$6.99||FREE Shipping||FREE Shipping||FREE Shipping|
|Sold By||Amazon.com||Amazon.com||Petco||Pet Resources||Amazon.com||Amazon.com|
|Item Dimensions||3.5 x 1.63 x 8.25 in||12.3 x 3.8 x 1.5 in||14 x 4 x 2 in||1.5 x 3.5 x 7.75 in||1.5 x 8 x 3 in||2.25 x 3.5 x 9.27 in|
|Size||100-watt||100 Watt||100 Watt||100-watt||100W - Up to 20 Gal||100 Watt|
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I plugged them both in , obviously one in each tank, attached the suction cups, there was nothing to adjust at all, the red light came on saying it was working, after about an hour it turned green which meant it had reached proper temp, I felt the water and it was not really warm but more slightly warmer than room temp. But before it was quite cool to the touch, almost cold. Within less than an hour later both fish were swimming all over the place.
This was 4 days ago and it although it still is early I have to say this was a great buy. The fish continue to seem happier, more active, eating better, cant believe how much a difference it made.
So far , so good. I love my fish, dumb I know, but bettas are so unique and have personalities I'm just sure of it, lol! I feel like a much better fish owner having got these heaters and making the fish more comfortable, and I could swear their colors seem brighter, a side effect perhaps? This is a great price , it works like it said it would and it adjusts the temp in the water automatically. I cant complain at all about this product.
You will notice that it goes on Green and then turns itself off within 5-10 minutes. This is normal and it will go back on within 15 minutes. It appears it was made this way to slowly increase the temperature so that the fish doesn't get shock with rapid temperature change.
Out of 6 of these that I purchase, 4 of them gave incorrect temperatures from 74 degrees Max to 78 degrees Max. What's disappointing is that in the morning, the heaters could not maintain its temperature at all. It gave me 68-72 degrees in the mornings.
Out of 6 ordered, 2 worked perfectly. But since I was returning the 4, I might as well just return the rest. So these are a hit and a miss. I ended up buying 50w mini heaters with controllable temperature dial on eBay from CLLPets for much less for a 3 pack, then it would coast me just for one of these.
in the 5 gallon tank, I had it in the back and couldn't see the lights to evaluate how well it's working. To test its accuracy, I took it out and placed it in a 3 gallon acrylic tank with lid, filled with about 2 gallons of water and nothing else in the tank. Took about a day, but temperature seemed to have reached the advertised 78-80 degree preset range and stabilized. Attached is a picture of the tank temperature after 2 days, right at 79 degrees.