Aquarium Air Stone Inline Filter Bubble Diffuser Transparent Plastic Bubble Wall Fitting for Small Fish Tanks

Feature:1.Dual Function Aeration & Filtration:Not only does it produce fine, uniform bubbles to boost water oxygen levels and keep fish healthy, but it also acts as an inline pre-filter to block large debris from entering and damaging your air pump. It combines two key functions in one compact design.2.Built-In Weight for Stable Submersible Use:Equipped with a small metal ball inside, the air stone sinks automatically and stays stable at the bottom of your tank, ensuring consistent bubble distribution without floating or tilting.3.Durable Transparent Plastic Construction:Made of high-quality, corrosion-resistant transparent plastic that is safe for both freshwater and saltwater environments. The material is non-toxic, won't leach harmful chemicals into the water, and is easy to clean and reuse.Specifications:Material: Food-grade transparent plastic + metal ballSize: Approx. 4.5cm × 1.2cm (L × Diameter)Connector Size: Fits standard 4mm/6mm aquarium air tubingFunction: Aeration, oxygenation, air pump pre-filterApplicable Tanks: Freshwater, saltwater, small aquariums, hydroponic systemsPackage Includes: 1 × Aquarium Air Stone