Quick Summary
The NICREW 100W Submersible Aquarium Heater is a fish tank heater with an external temperature controller. It is stated for aquariums up to 70 litres, so the main buying check is whether that size matches your tank.
The heater is adjustable and includes overheat protection that turns it off if the water temperature exceeds 37°C. It is also described as suitable for freshwater and saltwater aquariums.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | NICREW – the brand name used for the heater. |
| Product type | Submersible aquarium heater for fish tanks. |
| Power | 100W, which helps identify the correct heater size for the tank. |
| Tank capacity | For fish tanks up to 70 litres. |
| Temperature control | External temperature controller for adjustment and monitoring. |
| Protection | Overheat protection that switches the heater off if water temperature exceeds 37°C. |
| Installation | Can be installed vertically or horizontally with the included suction cups. |
| Intended aquarium type | Freshwater and saltwater aquariums. |
| Heating material | Thermal shatter-resistant quartz glass. |
What to Compare Before Buying
- Tank size: This heater is stated for aquariums up to 70 litres. Compare that limit with your tank volume before choosing.
- Power: The rated output is 100W. Check that this matches the heating level you want for your aquarium.
- Control setup: The unit uses an external controller, so make sure that layout suits where you plan to place the tank.
- Installation position: It can be fitted vertically or horizontally. Choose the orientation that suits your tank layout.
- Aquarium type: It is described for freshwater and saltwater aquariums, so confirm that this matches your setup.
Important Limitations
The heater is stated for tanks up to 70 litres, so larger aquariums need a different option. The overheat cut-off is listed at 37°C, which is a fixed protection point rather than a user setting.
Before You Decide
Check the tank volume, the 100W rating and the external controller layout before choosing this heater. If your aquarium is larger than 70 litres, look for a different heater size. Confirm that the included suction-cup mounting and vertical or horizontal fitting suit your tank setup.





