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AHJ

AHJ Aquarium Heater for 40-55-75 Gallon 300W Submersible Fish Tank Water Heater with Accurate Temperature Control Over-Temp Protect

4.3

$47.98

Size500W(75-100-120 Gallon)

About this item

  • 🐟🌡️[Accurate Temperature Control +-1 °F] 🐟 It ensures the water temperature is accurate at the setting temperature +-1°F. Different from others, thanks to the integrated design in which the PID temp-chip and nickel-chromium wires are connected directly. When the AHJ aquarium heater is in the water, it could detect the real temperature super fast and make regulations quickly. Ensure a stable and warm water comfortable for your aquatic fishes, betta, turtle
  • 🐟🌡️[Upgrade Intelligent Safety Protection] 🐟Protection against overheating, Over-temperature, and lack of water protection, Anti-dry burning functions. Safeguard your fish and aquarium with advanced safety measures. When the water temperature exceeds 94℉, the LCD digital display will display HH and keep flashing to remind. When the digit heater detects the fish tank's lack of water, it will auto-shut off
  • 🐟🌡️[Heating Fast & Keeps Stable] 🐟Enjoy fast and efficient heating with the AHJ aquarium heater. Quick temperature adjustment, hassle-free setup. Experience rapid heating for your 40-70 gallon (recommend 300 watts). If you are not sure which size and watt suits your fish tank, please measure the L W H, and contact our customer service
  • 🐟🌡️[External Controller Easy to Use] 🐟The heater must be fully submerged to work properly. Conveniently adjust settings by the external controller without wetting your hands. Press the setting button, the thermometer will change 1℉(63℉-93℉) cycle setting. Red LED light on means the heater working and the water is heating. Blue LED light on means the water temperature is kept constant. Very convenient to read and compare the temperature from LCD screen
  • 🐟🌡️[High Quality with Longer life span] 🐟Before the digital aquarium heater delivery, we have 100% conducted a 72-hour heating test in water to ensure the safety of the product. Using a thick quartz tube, 1.5m/4.75 ft cable(U.S. UL Certified), high temperature resistant protective case which Prevents water plants from adhering to the quartz glass wall and protects small fish not touching the quartz tube
  • Product description The heating rod can be sideways, erected, and placed in the water obliquely. Just ensure that the water level line is immersed in water. Why does the LED display display E1 code error? The water level is too low. Make sure the heater and the temperature sensor on top are fully immersed in the water. (The heating rod cannot be covered with sediment, otherwise it will cause damage due to uneven heating. ) Why does the LED display display HH/LL code error? HH: Water temperature exceeds 94°F, over-temperature warning and the aquarium will stop heating. LL: Low temperature warning when the water temperature is lower than the set value. This usually happens during a water change. After a few months of use, the heater failed and the temperature was inaccurate. what do I do? Deposits attached to glass 🐟🌡️[Accurate Temperature Control +-1 °F] 🐟 It ensures the water temperature is accurate at the setting temperature +-1°F. Different from others, thanks to the integrated design in which the PID temp-chip and nickel-chromium wires are connected directly. When the AHJ aquarium heater is in the water, it could detect the real temperature super fast and make regulations quickl
Specification

Product facts

Key details

color_spec
Black
manufacturer
AHJ
date_first_available
March 28, 2024
brand_name
AHJ
target_audience_keyword
Fish

Dimensions and fit

dimensions
‎ 15.71 x 4.61 x 2.52 inches; 1.34 Pounds
weight
1.34 pounds
item_weight
1.34 pounds
item_package_dimensions_l_x_w_x_h
15.71 x 4.61 x 2.52 inches
size
300W(40-55-75 Gallon)
package_dimensions
15.71 x 4.61 x 2.52 inches; 1.34 Pounds

Technical specifications

item_model_number
heaters
model_name
Fish tank heater

Item information

directions
all
warranty_description
1 year
color
Black
age_range_description
All Life Stages
included_components
aquarium heaters
specific_uses_for_product
heater
best_sellers_rank
#31,419 in Pet Supplies ( See Top 100 in Pet Supplies ) #76 in Aquarium Heaters
Overview

About this item

  • 🐟🌡️[Accurate Temperature Control +-1 °F] 🐟 It ensures the water temperature is accurate at the setting temperature +-1°F. Different from others, thanks to the integrated design in which the PID temp-chip and nickel-chromium wires are connected directly. When the AHJ aquarium heater is in the water, it could detect the real temperature super fast and make regulations quickly. Ensure a stable and warm water comfortable for your aquatic fishes, betta, turtle
  • 🐟🌡️[Upgrade Intelligent Safety Protection] 🐟Protection against overheating, Over-temperature, and lack of water protection, Anti-dry burning functions. Safeguard your fish and aquarium with advanced safety measures. When the water temperature exceeds 94℉, the LCD digital display will display HH and keep flashing to remind. When the digit heater detects the fish tank's lack of water, it will auto-shut off
  • 🐟🌡️[Heating Fast & Keeps Stable] 🐟Enjoy fast and efficient heating with the AHJ aquarium heater. Quick temperature adjustment, hassle-free setup. Experience rapid heating for your 40-70 gallon (recommend 300 watts). If you are not sure which size and watt suits your fish tank, please measure the L W H, and contact our customer service
  • 🐟🌡️[External Controller Easy to Use] 🐟The heater must be fully submerged to work properly. Conveniently adjust settings by the external controller without wetting your hands. Press the setting button, the thermometer will change 1℉(63℉-93℉) cycle setting. Red LED light on means the heater working and the water is heating. Blue LED light on means the water temperature is kept constant. Very convenient to read and compare the temperature from LCD screen
  • 🐟🌡️[High Quality with Longer life span] 🐟Before the digital aquarium heater delivery, we have 100% conducted a 72-hour heating test in water to ensure the safety of the product. Using a thick quartz tube, 1.5m/4.75 ft cable(U.S. UL Certified), high temperature resistant protective case which Prevents water plants from adhering to the quartz glass wall and protects small fish not touching the quartz tube
  • Product description The heating rod can be sideways, erected, and placed in the water obliquely. Just ensure that the water level line is immersed in water. Why does the LED display display E1 code error? The water level is too low. Make sure the heater and the temperature sensor on top are fully immersed in the water. (The heating rod cannot be covered with sediment, otherwise it will cause damage due to uneven heating. ) Why does the LED display display HH/LL code error? HH: Water temperature exceeds 94°F, over-temperature warning and the aquarium will stop heating. LL: Low temperature warning when the water temperature is lower than the set value. This usually happens during a water change. After a few months of use, the heater failed and the temperature was inaccurate. what do I do? Deposits attached to glass 🐟🌡️[Accurate Temperature Control +-1 °F] 🐟 It ensures the water temperature is accurate at the setting temperature +-1°F. Different from others, thanks to the integrated design in which the PID temp-chip and nickel-chromium wires are connected directly. When the AHJ aquarium heater is in the water, it could detect the real temperature super fast and make regulations quickl

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Customer reviews

8 reviewsPositive

Rated 4.3/5 across 8 reviews — well received overall.

  • 100% of sampled reviews are from verified purchases.
  • 75% of sampled reviews give 4–5 stars.

Customers say

Customers find the aquarium heater maintains the right temperature in their tanks and appreciate its easy-to-read display with maximum and minimum temperature settings.

Generated from the text of customer reviews

Reviews with images

Customer review image for Amazingly great aquarium heater
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★★★★★

Reliable & nearly spot-on desired temperature.

Super heater for my 55-gallon aquarium. Easy to program the desired temperature, and it stays at that temperature nearly spot-on. Easy to read desired & actual temperatures. Seems very durable & reliable. Read more

Steven A. MartinVerified purchase
★★★★★

Great heater

Have used it now for several weeks and works well. Perfect size for my 55gal tank. The digital display clear and shows how well the temperature holds. Read more

LPVerified purchase
★★★★★

Good heater for 80 gallon aquarium

Unit is very easy to operate and provides a very clear current temperature and setpoint display. The touch controller is at a good location on the cord to access easily beside or behind the tank. I would recommend this heater to others. Read more

JeffVerified purchase
★★★★★

Aquarium heater

Delivery was quick, especially like the digital optics. Easy to change temps. Read more

james A BonseyVerified purchase
★☆☆☆☆

DO NOT BUY, READ THE REVIEW (updated)

I would love to leave negative stars if possible. Previous heater stopped working. Bought this one to replace it and it was a horrible mistake. Worked great the first few days and went to have thanksgiving dinner with the family. I get back and 15 tropical fish of mine were dead. Heater is flashing error codes, I’m assuming some moisture got in and it shorted and shocked all of the fish to death. Parameter are perfect, fish are ALL dead. This heater is horrible and should not be sold. Do not buy this. UPDATE-tested tank with non contact voltage meter and the tank was showing electricity present. Fish were all electrocuted. Unplugged light and bubbler to isolate the source and it was this heater. Read more

DarrenVerified purchase
★★★★☆

Great but not forever

Worked great for a year and a half! Then the internal sensor failed…. I have mine in a large tank for a turtle so consistent temperature is helpful but not as deadly as some fish. I set it to 78 and it seemed perfect for a year and a half. Then one day when I touched the front of the tank it felt extremely warm. Like comfortable bath for me warm. The display for current temperature read 77.8 so it thought it was doing the right thing to add a little heat. My partner told me I was imagining things since the display said it was fine. After a couple of days of me thinking it still felt warm and then my turtle acting much more feisty, I remembered I have a point and measure thermometer. (Our other thermometers are either for food or people and I didn’t want to run any risks of contamination). 99.6! I immediately unplugged the heater and am letting it slowly go back down. I don’t think I’ll bother replacing it. But for that year and a half it was great! I’m not sure if it’s a case of cheap parts that aren’t built to last or if it could be due to our notoriously hard water causing scale and buildup that led to failure. Read more

Valerie PVerified purchase
★★★★★

Amazingly great aquarium heater

The media could not be loaded. This heater is the best aquarium heater I have ever purchased. It heats up the water pretty fast and maintains the right temperature in my tank. I have these heaters in all of my tanks and my fish stay good and healthy. Love how it shows the actual temperature and what it is set at. Very little fluctuating and holds temp great! A must have for your tanks. I have then in my 55 gallon and my 40 gallon and they are great! Read more

Customer review image for Amazingly great aquarium heater
Sandie NVerified purchase
★★★★★

Works fine

This seems to work like it should. Read more

Judy TaylorVerified purchase

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