Glass Aquarium Heater — Safe, Durable, Precise Key benefits Reliable dry-fire protection: Integrated dry-fire protection prevents damage to the heating rod, reducing failure risk if water level drops. Low-voltage safety: Operates on a 5V low-voltage power supply to reduce electrical risk and help extend the heater’s service life. Durable construction: Wear-resistant aluminum alloy housing shields internal components for longer-lasting performance. Stable temperature control: Advanced temperature control technology maintains a constant, long-lasting temperature within a set range to support aquatic life. Two power options: Choose between 5W and 10W models to match small aquarium sizes and heating needs. What it does and why you need it Keeps small aquariums at stable temperatures that protect fish, shrimp, and other small aquatic animals from stress caused by temperature swings. Designed for safety and longevity so you can rely on the heater for daily use in compact setups without frequent replacements. Compact, efficient heating tailored to tiny tanks where full-size heaters are unsuitable. Specifications and performance Type: Glass aquarium heater with aluminum alloy outer housing. Power options: 5W and 10W models. Power supply: 5V low-voltage input. Safety feature: Integrated dry-fire protection to prevent heating rod damage. Control: Advanced temperature control technology for steady temperature maintenance. Heating capacity: 10W model: suitable for 2–5 litre aquariums; raises water temperature by approximately 8–12°C. 5W model: suitable for 0.5–2 litre aquariums; raises water temperature by approximately 5–8°C. Compatibility and material Materials: Glass heating element contained within a wear-resistant aluminum alloy housing. Compatible tanks: Ideal for nano tanks, small desktop aquariums, jars, and other compact enclosures in the 0.5–5 litre range. Power: Requires a 5V low-voltage power supply (provide your own compatible 5V source). Practical use scenarios Shrimp or small invertebrate tank: Maintain a steady temperature in a 1–2 litre shrimp tank using the 5W model to reduce stress and support molting. Quarantine or hospital jars: Use the 10W model in 2–5 litre quarantine containers to quickly stabilize water temperature for recovering fish. Desktop betta or nano display: Keep a small decorative or desktop aquarium at a consistent temperature without the bulk of a full-size heater. Notes for users Select the model (5W or 10W) according to your aquarium volume and the desired temperature increase ranges listed above. Install and power the heater according to the tank’s water level and your 5V power source recommendations to ensure the dry-fire protection functions correctly. Designed to offer safe, durable, and precise heating for very small aquarium setups while preserving internal components and extending heater life.