HarmonyHome Aquarium Heater 300W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater
- 【Ai Variable-Frequency Aquarium Heater】The HarmonyHome 300W Fish Tank Heater can be applicable to approx. 30-55 gal tank, This heater for fi…
- 【Dual-Sensing Temperature Probe Design】This design enables more precise temperature control: Temperature control range 59-93°F/15-34°C, accu…
- 【Premium Safety & Durability】The durable material of the turtle tank heater ensures safe operation. The outer shell covering the whole body …
- 【Intelligent power cut-off, Comprehensive Protection】This heater has a unique intelligent water and temperature sensor system, providing com…
- 【Cautions】1.Please ensure the heater is 100% submerged into the water before plug in the power. 2. Please unplug the power and cool down the…
Mubboo Value Score: 3.5/10
How it stacks up
Rated 4.7/5 — better than 91% of 53 Aquarium Heaters we track. Premium-tier pricing at $39.99.
Head-to-Head vs Category Leader
| HarmonyHome | hygger (Leader) | |
|---|---|---|
| Price | $39.99 | $33.99 |
| Rating | 4.7/5 | 5.0/5 |
| Reviews | 21 | 13 |
| Mubboo Score | 3.5/10 | 4.3/10 |
The category leader hygger 300W Submersible Aquarium Heater with Di offers better ratings at $33.99.
Quick Specs
- Size
- 300W for 30-80 Gallon
- Color
- Black
- Item Weight
- 2.31 pounds
- Manufacturer
- HarmonyHome
- Customer Reviews
- 4.7 out of 5 stars
- Date First Available
- February 6, 2026
- Target Audience Keyword
- Fish
- Item Package Dimensions L x W x H
- 14.84 x 7.91 x 2.52 inches
What reviewers say
Synthesized from 40 reviews · 100% verified purchases.
Ensure adequate water circulation to prevent flow errors, use a separate thermometer to verify tank temperature, and consider adjustable models if you need to treat diseases with higher heat.
Rating reliability
Other Aquarium Heaters
Frequently Asked Questions
Is the HarmonyHome HarmonyHome Aquarium Heater 300W/1000W, Submersible Fish T worth buying in 2026?
It earns a Mubboo Score of 3.5/10, with a 4.7/5 rating from 21 reviews — better than 91% of Aquarium Heaters we track.
How much does the HarmonyHome HarmonyHome Aquarium Heater 300W/1000W, cost?
It is currently $39.99 — premium-tier pricing for Aquarium Heaters.
How does it compare to the top-rated Aquarium Heaters?
The category leader hygger 300W Submersible Aquarium Heater with Di offers better ratings at $33.99.
Sources & References
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