Features: 1. Adopting circulating absorb fish feces and filtration, the product itself has no power, no electricity, and is safe to use. 2. Connected to oxygen pump, oxygen pneumatic allows fan to rotate to drive water flow to generate suction, sucking in fish poop and other dirt. 3. Quartz biological beads have dense pores and a large attachment area to prevent corrosion by other acid substances. 4. Install air bubbles inside, connect the trachea and the aeration pump, which can produce the effect of aeration. 5. Pneumatic filter, oxygen pump flushes gas into the middle, and the gas coming out of middle will drive water inside to flow out and filter water quality. Specification: Item Type: Fish Tank Filter Material: Plastic Weight: Approx. 355g / 12.5oz Product Size: Approx. 15x9cm / 5.9x3.5in Uses: Suitable for fish tanks, aquariums, aquaculture Package List: 1 x Fish Tank Filter Features 5 Adjustable LED Lights: Enjoy 5 vibrant LED colors (red, blue, green, multi-color, and RGB) that attract your pet's attention and provide joy. Charge for 1.5 hours for 5-6 hours of use. Wireless Remote Control: Conveniently control the smart rolling balls within a range of 4 to 16.4 feet, providing comfort during pet training and playtime. 3 Interactive Modes: Choose from roller, bounce, or automatic sleep modes for smooth and active interaction with your pet, ensuring automatic play and rest. Durable Material: Made of high-impact ABS plastic and TPE, the pet balls are wear-resistant, drop-resistant, and safe for pets to play and chew. Stimulate Hunting Instincts: Keep your pets healthy and mentally active with this automatic bouncing ball, stimulating their hunting instinct and providing daily fun and exercise.