WADORN 4Pcs Aquarium CO2 Generator-DIY Carbon Dioxide Reactor Bottle Caps DIY Plants Air Diffuser Generators Replaceable Generator DIY Reactor Parts for Aquarium Fish Tank Live Plants Hydroponics

• Package Contents: You will receive 4pcs ABS plastic CO2 generator bottle caps, each measuring 51mm in length, 38mm in width, 38mm in thickness, with an inner diameter of 25.5mm and a 2.7mm hole diameter. These caps are perfectly compatible with various standard bottles, meeting the needs of multiple usage scenarios
• High-Quality Material: These CO2 generator bottle caps are made from premium ABS plastic, offering durability. They remain stable and reliable even after prolonged immersion, ensuring consistent CO2 supply performance in aquarium environments
• Easy Installation: Unlike conventional models on the market, the gas outlet holes are located on the top and side, allowing for quick and easy installation on various standard plastic bottles without any tools. It has strong sealing performance and prevents CO2 leakage, making it easy for even beginners to use, combining practicality and durability
• Wide Applicability: Specifically designed for live plants and ecological aquariums, it is also suitable for hydroponic systems and DIY CO2 reaction devices. It effectively promotes photosynthesis in aquatic plants and creates a healthy aquatic ecological environment
• Quick-Release Design: This DIY CO2 bottle cap features a convenient quick-release design, allowing for easy sealing and opening of the gas cylinder. It is simple, convenient, and effortless to operate. For users who need to use it frequently, it saves time and effort and is hassle-free to use

Introduce: Size: 51mm long, 38mm wide, 38mm thick, hole: 2.7mm, 25.5mm inner diameter Color: Natural Material: ABS Plastic Features: High-Quality Material: These CO2 generator bottle caps are made from premium ABS plastic, offering durability. They remain stable and reliable even after prolonged immersion, ensuring consistent CO2 supply performance in aquarium environments Easy Installation: Unlike conventional models on the market, the gas outlet holes are located on the top and side, allowing for quick and easy installation on various standard plastic bottles without any tools. It has strong sealing performance and prevents CO2 leakage, making it easy for even beginners to use, combining practicality and durability Note: Manual measurement, please allow slight errors on size. The colors may exist slight differences due to different screens.