Description: Enhance your aquarium maintenance with our protein skimmer. Made from durable plastic, it delivers lasting performance. Effectively remove protein colloids, organic particles, and heavy metals, ensuring a pristine environment for your fish. The secure suction cup design enables effortless and easy installation on your tank. Promote oxygen exchange and create healthier water with our advanced protein separator. Kindly note, an air pump is not provided. Features: Made of high quality plastic material, solid and durable to use. Perfect for cleaning undesired protein colloid of fish tank. Easy to use, it should be equipped with a air pump, filter protein colloid, organic particles and other heavy metal materials from the water, fast and effective. Two different size for choosing, suitable for most fish tank, convenient and practical. Helps improve exchange and keep your aquarium water clean and clear. Specification: Main Material: Plastic Type: #1, #2 (Optional) Collection Cup Diameter: Approx. #1: 8cm / 3.15inch, #2: 10cm / 3.94inch Bottomed Cup Diameter: Approx. #1: 5cm / 1.97inch, #2: 5cm / 1.97inch Whole Height: Approx. #1: 22.5cm / 8.86inch, #2: 28cm / 11.02inch Weight: Approx. 243-318g Package Included: 1 x Protein Skimmer (Without Air Pump) 2 x Suction Cups 1 x Plastic pipe 1 x Wooden Block Note: This product is without air pump.