KSY Aquatics 20W Preset Aquarium Heater for Small Fish Tanks
Preset Warmth for Small Aquariums
Designed for small aquarium setups, this compact 20W heater is preset to 26°C / 78.8°F, providing automatic temperature control without a manual adjustment dial. It is recommended for aquariums from 5–10 L / 1.3–2.6 US gal.
No Manual Temperature Adjustment
The built-in thermostat automatically manages heating around the preset temperature. A red indicator shows when the heater is actively heating, while a green indicator lets you know when it is maintaining warmth.
Compact and Fully Submersible
With a body length of just 4.92 in / 12.5 cm, the heater takes up minimal space in small tanks. The IPX8 fully submersible design can be installed vertically or horizontally using the suction cup mount and is suitable for both freshwater and saltwater aquariums.
Simple Setup for Everyday Use
Place the heater fully below the waterline in an area with good water circulation, then connect it to a compatible 100–120V power supply. Always unplug the heater before water changes, cleaning, removal, or maintenance.
Specifications
| Brand | KSY Aquatics |
| Product Type | Preset Aquarium Heater |
| Power | 20W |
| Rated Voltage | 100–120V |
| Plug Type | US Plug |
| Preset Temperature | 26°C / 78.8°F |
| Temperature Accuracy | ±2°C / ±3.6°F |
| Recommended Tank Volume | 5–10 L / 1.3–2.6 US gal |
| Body Length | 12.5 cm / 4.92 in |
| Power Cord Length | 1.5 m / 4.92 ft |
| Waterproof Rating | IPX8 / Fully Submersible |
| Indicator Light | Red: Heating / Green: Keeping Warm |
| Material | Carbon Fiber Plastic |
| Water Type | Freshwater & Saltwater |
| Mounting | Suction Cup |