Keep your tiny underwater world cozy with our Mini Aquarium Heater and Small Tank Heater!
This super small design fits perfectly in any mini tank without taking up space. It heats up fast, never cooks your fish, and saves energy while being super safe with its tough black tungsten material. Plus, it’s precise, explosion-proof, and built to last!
Our Small Tank Heater features a special anti-scald surface, waterproof and crack-resistant design, and a full-metal heat conductor. It works with an ultra-thin 3cm minimum water level, a smart temperature sensor, and overheat protection that shuts off if it’s out of water.
Choose from 15W for tanks up to 2 gallons or 25W for tanks up to 5 gallons—perfect for keeping your water at a steady 25°C with auto on/off heating.
This Mini Aquarium Heater Is Great For:
All kinds of small tanks—freshwater, saltwater, tropical fish, goldfish, or fancy fish.
Low-water tanks like turtle setups, with a tough ABS shell that protects against turtle bumps or fish nibbles, and a safe 3cm minimum water level.
Even PVC tanks or plastic turtle tubs—it works everywhere!
How It Works:
The step-up heating stops when it hits 25°C and starts again when the temp drops. It has a built-in auto thermostat chip to keep things steady, but the whole heater must stay underwater. If any part sticks out, the temp sensor might go wild and keep heating—don’t let that happen!
Tips to Know:
- Plugging it in starts it right away, and it auto-controls to 25°C.
- Heat spread matters! A narrow bottle heats slower than a wide open tank. A low-power heater might not hit 26°C in a fast-heating wide tank.
- If it’s not working: It’s set to 25°C (no adjustments), and it won’t turn on if room or water temp is 26°C. Don’t test with your hand (36°C body temp won’t tell you much)—use a thermometer. If the water’s 25-26°C, it’s doing its job。
Grab our Mini Aquarium Heater today and give your fish or turtles the warm home they deserve!
Using Scenarios
Submerging Warning
1 inch Low Water Level
Time Saving & Energy Efficient Mini Aquarium Heater
