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Aquarium Heater Digital Dual Display - 450W

Aquarium Heater Digital Dual Display - 450W
Product code: D2HT-450
Original Price: $89.99
Our Price: $59.99
You Save: $30.00 (33%)
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Features and Specifications:
D2HT-450 450 Watt Digital Heater
Perfect for both fresh and saltwater tanks, AQUATOP’s D2HT 450 Watt digital heater includes a dual digital display that shows current water temperature and desired water temperature. This advanced and versatile heater is capable of heating aquariums up to 180 gallons and will give an accurate temperature reading within (+/-) 1.8 degrees of the desired setting. Equipped with a highly accurate temperature sensor, the D2HT-450 also includes automatic over-heating protection. If the temperature rises above 93F, the heater will automatically shutdown.
  • Specs:
  • Dual digital display - current and target temperature
  • Energy saving automatic shut down once target temperature is reached
  • Voltage: 120v/60hz
  • Advanced Design
  • Dual Digital Display
  • Temperatures adjustable between 20c-34c/68-93F.
  • External Temperature Sensor
  • Heating Indicator Included
  • Shatterproof Design
  • Dimensions: 1.25 x 1.25 x 17.0
  • Suitable for up to 150 Gallon Tanks
Questions and Answers:
By Danny from USA on December 21, 2011
How do you adjust the temperature on this aquarium digital heater?
By Customer Service on December 21, 2011

To set the temperature lower you must click the button on top to take the temp higher and then after 92 degrees it will start again at lowest temp of 67 and you can increment from there.

By steve from RI on January 5, 2013
can this heater be mounted horizontally
By Customer Service on January 9, 2013

Hello Steve,

Some Aquatop customers choose to mount their heaters horizontally; however, we recommend mounting the aquarium heater vertically to ensure there is no added stress on the cord.

By todd from Indianapolis, IN on September 10, 2012
Is this heater fully submersible? I want to place it in my sump. How long is the temp. reader cord? Is it long enough to go back up to the tank or would it have to go in the sump? Not sure if the sump is the best place to read the temp?
By Customer Service on September 14, 2012

Greetings Todd,

We have received your recent email regarding a D2HT-450. Each D2HT heater is fully submersible and can be mounted horizontally of vertically. A sump is a good place to install the heater. The temperature sensor in approximately 6" inches long. If the heater is installed in a sump the temperature probe will not reach the aquarium.

If you have any additional questions please do not hesitate to ask.

Product Reviews:
Aquarium Heater Digital Dual Display - 450W
5 Stars based on 13 Review(s)
May 23, 2013
Says it will heat up to 180 gal have it in a 150 gal pond watering trough pond made of heavy plastic and it can't keep the temps stable. Have it set for 72 and come out in the morning to find the water at 62. Was hoping it would hold temp for my 2 Koi and 4 Comet and 3 Pleco pond so I don't have to bring them in this winter. Temps during the trial of this heater outside have been in the 55 to 60 range.
Merchant Response:
The heater is used for indoor tank not for outdoor pond. The rule of thumb is 3 watts per gallon will raise the water temperature about 3-5 degrees above ambient room temperature. 7-10W will raise it about 7-9 degrees. Also, if the tank is open (no glass or acrylic cover), the Delta between tank and ambient temperature will be smaller. High circulation also increases heat loss - you can't use the heater for outdoor pond use.

Patricia Handberg
Central Washington State United States
5 Stars
I would recommend this item to a friend.

December 27, 2013
So far the heater seems w b working very efficient.
Looks great in tank.
Don't have 1

5 Stars
I would recommend this item to a friend.

Best heater
July 21, 2013
I never have to worry about my temperature with this heater. It's been a great heater.

5 Stars
I would recommend this item to a friend.

Good but expensive
November 26, 2012
The heater is easy to use. Two digital readouts large and clear. Is several inches shorter than most 300W heaters. Keeps temperature accurate within one degree. Bad- Instructions say must be placed vertically
Very easy to use, Effective
Poor Value

5 Stars
I would recommend this item to a friend.

Stabalized temperature
September 7, 2012
We had 2 300 watt heaters used together, & seperataley. Couldn't stabalize temp in our 125 gallon Cichlid tank. Tried together, seperatley, adjusting temp. Always too hot, unplug in day, plug back in at night. Bought this unit problem solved.
Durable, Good Value, Effective, Safe, Easy to Use
Best Uses:
Large Aquariums, Freshwater Tanks

Montreal, WI.
5 Stars
I would recommend this item to a friend.

June 15, 2012
Best heater on the market. Accurate, durable, best heater i owned. Hurry try it yourself.

5 Stars

TruAqua ROCKS !!!!!
March 16, 2012
The unit itself is super simplistic to use, with one button operation. It looks fantastic in the tank. The large LED display is easy enough to read from 12ft away. This is my second, a replacement for a faulty unit. Hopefully an isolated incident.
Looks good, Effective, Good Value, Easy to Use
Best Uses:
Freshwater Tanks, Large Aquariums

Kevin Oscar's Dad
Las Vegas, NV
5 Stars
I would recommend this item to a friend.

March 15, 2012
I use this on a 72" 125 gallon African cichlid tank and it works like a charm. I have a 3D background and I have it situated behind it and the temp sensor in front of the background. Along with ample circulation, this keeps the whole tank within 1 degree of the setting. No more worrying with the "dial" heaters, this works like a charm, I highly suggest it and the price can't be beat!
Easy to Use, Effective, Good Value, Safe, Durable
Best Uses:
Freshwater Tanks, Large Aquariums

Jasper, AL
5 Stars
I would recommend this item to a friend.

March 8, 2012
Heats my 125 with no problem at all will little to no temp differences
Good Value, Effective, Safe, Easy to Use
Best Uses:
Large Aquariums

Davenpot, Iowa
5 Stars
I would recommend this item to a friend.

great deal
February 24, 2012
For the price this is the best heater I have ever owned. The digital display though I thought was unessesary makes it much easier to set the temp right where you want it. I opted for the 450W wich is more than enough to handle my 125 with 30 gal sump. Highly recomended.
Effective, Good Value, Easy to Use

5 Stars
I would recommend this item to a friend.

Great Product
February 18, 2012
I purchased this heater for my 135 gallon aquarium and it works great and I plan on ordering another for my 100 gallon.
Good Value, Durable, Easy to Use, Effective, Safe
Best Uses:
Freshwater Tanks, Large Aquariums

Tampa, FL
5 Stars
I would recommend this item to a friend.

awesome product
February 8, 2012
I use this heater on a 150 gallon planted aquarium. Its easy to read and use. By far the best heater i have ever used. May even buy a second one. Thanks for making such a great product.
Good Value, Easy to Use, Safe, Durable, Effective
Best Uses:
Freshwater Tanks

gavin sons
columbus in
5 Stars
I would recommend this item to a friend.

January 28, 2012
This heater is priced well, I use it in my 150 gal reef to keep it at a constant 79 degrees with no fluctuation in temperature. I like the led technology easy to read no guessing if your a degree off just set and forget it. Suction cups are just ok. Other than that this is a great heater and I highly recommend anyone who is looking for a heater or a replacement don't pass this one up.
Effective, Durable, Easy to Use, Good Value, Safe
Suction cups are ok
Best Uses:
Saltwater Tanks, Large Aquariums

lakewood, ca
5 Stars
I would recommend this item to a friend.

AQUATOP Digital Heater

The D2HT Dual Digital Display Heater from AQUATOP

By David Lass, Aquarium Fish Int'l Magazine, December 2011

The new digital heater from Aquatop Aquatic Supplies includes a number of features and benefits;it is an excellent aquarium heater.

CLAIMS: Aquatop claims that the heater is easy to use and will maintain the aquarium temperature correctly.

TESTS: I tested a 300-Watt Aquatop Digital Heater on a 50-gallon planted tank. Over a few weeks, I raised the water temperature by 2 degrees every other day and then lowered it 2 degrees, going from 70 to 80 degrees Farenheit and back down.

RESULTS: The heater performed perfectly. I confirmed each adjustment with two thermometers in the tank. the display on the heater clearly shows the set temperature and the actual temperature. It is easy to turn the heater on and off, and to make temperature adjustments. The heater itself is well-made, with suction cups for mounting it to the glass. I especially like that it has integrated temperature probe that is mounted 6 inches or so from the heater, which I think is more accurate than relying on having the sensor within the heater itself.

CONCLUSION: The Aquatop Aquatic Supplies Digital Heater is an excellent piece of equipment, and I encourage hobbyists to use it. It is easy to use, accurate to within 1 degree, well-made and sturdy.

David Lass has owned and operated retail pet stores and a wholesale fish import and export business. He is a frequent contributor to Aquarium Fish International and FAMA, and has covered many aspects of the aquarium and pond hobbies. He is also a well-respected moderator on