With the bubble counter, you can adjust the amount of initially accurately and safelyThe bubble counter with thickened acrylic tube has improved corrosion resistance and longer service life, and plants can be optimally supplied with and push beautifully The 2 screens allow you to read the parameters and you can assure if they are the way you want Being made of high quality aluminum alloy. Not only the simple design makes the installation easy, but also it makes your aquarium more beautiful The controller can be used with our wall mounted timer to make an automatic time delay switch Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store