Instructions for use 1: Install the product on the air outlet pipe of the filter unit, and then open the filter. It is recommended to tilt the air pipe interface downward during installation. If the air pipe interface is facing upward, there is air inside the product, ventilate it slightly, and tighten it immediately after ventilation. 2: Install the carbon dioxide equipment and air pipeline, open the fine-tuning valve on the bubbler, keep it for 5-10 minutes, let the high-pressure gas fully open the air hole, and then fine-tune the regulating valve to the normal air outlet.<br><br>1: Special high-pressure carbon dioxide pipeline must be used The special carbon dioxide air pipe is harder and cannot be tightened by hand. If it is an opaque hose, it cannot be used. 2: Installation location It is recommended to install it within 1m of the water outlet, and the bubble is closest to the water outlet Color: As shown Material: aluminum alloy<br><br>Package Contents: 1 Set External atomizer<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.