Features: <br>This CO2 aquarium regulator can assist your aquatic plants in their growth cycle. <br>Always inject the right amount at the right time to keep your plants growing the right way. <br> <br>The large display allows for easy reading of your settings to ensure that they are always where you want them to be. <br>The precision construction of this regulator will ensure that you can always fine tune the amount of CO2. <br>Perfect CO2 aquarium regulator to create the best growing conditions for your aquarium plants. <br> <br> <br> <br>Package list: <br>Material: Aluminum alloy <br>Color: Silver <br>Suitable interface: w21.8, g5/8(Optional) <br>Size: 6*7cm / 2.4*2.8 inch(Approx.） <br> <br> <br>Package list: <br>1 x CO2 aquarium regulator <br> <br> <br>Note: <br>Adjustable fine-tuning valve to control the size of the air output, or a separate bubble counter accessory (product not equipped) <br>Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.<br>1、This CO2 aquarium regulator can assist your aquatic plants in their growth cycle. <br>2、Always inject the right amount at the right time to keep your plants growing the right way. <br>3、The large display allows for easy reading of your settings to ensure that they are always where you want them to be. <br>4、The precision construction of this regulator will ensure that you can always fine tune the amount of CO2. <br>5、Perfect CO2 aquarium regulator to create the best growing conditions for your aquarium plants. 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.