100W heaters for 10~20 Gallon (37-75L) fish tanks 200W heaters for 20~30 Gallon (75-113L) fish tanks 300W heaters for 30~50 Gallon (113-189L) fish tanks
✓ Quartz glass material is shatterproof and acidproof, making it suitable for prolonged use in marine water and fresh water. ✓ Built-in thermostat to automatically control the water temperature at the desired value ✓ Temperature difference within ±1℃/±2ºF ✓ 20℃-35℃（68℉-94℉） adjustable heating temperature ✓ Over-temperature protection ✓ ℃/℉ Selection ✔ Double-row bracket with 4 suction cups for a more stable installation ✔ Soft silicone protective covers at both ends, no harm to your pet fish
