【Efficient Cooling for Small Tanks】This aquarium chiller is designed specifically for small tanks up to 15 gallons. Please note: if your tank exceeds this capacity, the chiller will not cool effectively. Perfect for nano reefs, betta tanks, desktop aquariums, or small hydroponic systems. 【Setting Range】The temperature setting range of the chiller is 10‑50℃ (50‑122℉), which meets the needs of different cooling environments. Just press a simple button to adjust the temperature. The design of heat dissipation hole improves cooling efficiency. 【Excellent Cooling Efficiency】Featuring a built-in silent fan and a porous design, this hydroponic cooling system delivers powerful airflow with minimal noise — so it keeps your water cool without disturbing your daily routine. 【Low-Noise Operation】This chiller utilizes a compressor-free design, operating at an ultra-quiet 30–40 dB range. Suitable for noise-sensitive environments such as bedrooms, offices, and living rooms. 【Wide Application】This water cooling system works well in homes, hotels, and aquariums. It accommodates various hydroponic setups — including fish, shrimp, breeding tanks, and other systems that require temperature regulation.